HONDA HS626

PREFACE This manual covers the construction, function and servtcmc procedures of the Honda H$828 snowblower. ~ Careful observance of these instructions will result in better. safer service work.

NIO;W!hll£i Indicates a strong possibility of severe personal injury or death if instructions are not followed.

CAUTION: Indicates a possibility of personal injury or equipment damage if instructions are not followed.

NOTE: Gives helpful information.

CAUTION: Detailed descriptions of standard workshop procedures. safety principles and service operations are not included. Please note that this manual does contain warnings and cautions against some specific service methods which could cause PERSONAL INJURY to service personnel or could damage the product or make it unsafe. Please understand that these warnings cannot cover all conceivable ways in which service, whether or not recommended by American Honda, might be done. or of the possible hazardous consequences of each conceivable way, norcoutd American Honda investigate all such ways. Anyone using service procedures or tools. whether or not recommended by American Honda. must SBtisfy himself thoroughly that neither personal safety nor product safety will be jeopardized by the service methods or tools selected.

All information contained in this manual is based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice. No part of this publication may be reproduced, stored in a retrieval system. or transmitted, in any form by any means, electronic, mechanical, photocopying, recod­ing, or otherwise, without the prior written permission of the publisher. This includes text. figures and tables.

HONDA MOTOR CO., LTD SERVICE PUBLICATIONS OFFICE

HS928

CONTENTS

SPECIFICATIONS .. SERVICE INFORMATION

MAINTENANCE

ENGINE REMOVAL/INSTALLATION

FUEL SYSTEM

RECOIL STARTER/FAN COVER/MUFFLER

FLYWHEEL/IGNITION COIL

CYLINDER HEAD/VALVES

CYLINDER/CRANKCASE

PISTON/CRANKSHAFT /CAMSHAFT

I CHUTE Ill I AUGER/AUGER TRANSMISSION lfJ 1

TENSION PULLEY I AUGER BRAKE 1 s• I HYDROSTATIC TRANSMISSION IGI I TRACKS IIOJ I SHIFT LEVER/CHUTE LEVER/CONTROL PANEL lt::l I CLUTCH LEVER/HANDLE I fl I AC STARTER MOTOR 11:1 I OPERATION ll!l

INDEX

HONDA HS724 · HS928

1. SPECIFICATIONS

1. SPECIFICATIONS •HS928 DIMENSIONS AND WEIGHTS

Model

Description code

Type

Overall length mm lin)

Overall width mm(inl

Overall height mm(in)

Handle height mm(inl c-=---··

Dry weight kg llbs)

Curb weight kg (lbsl

ENGINE

Model

Engine model

Type

Displacement

Bore x Stroke

Compression ratio

Cooling system

Ignition system

Ignition timing -Spark plug

Carburetor

Air cleaner

Governor

Lubrication system

Oil capacity

Starting system

--- ---Stopping system

HS928

1. SPECIFICATIONS 2. WIRING DIAGRAMS

HS928

SZAS

TA I TAS I WA I WAS

1,422 (56.0) I 1,400 155.1) I 1,452 (57.2)

725 (28.5)

1,022 (40.2) I 1,042 (41.0)

910 (35.8)

105 (231) I 109 (240) I 96 (212) I 99 (218)

111 (245) I 116(256) I 102 (225) I 105 (231)

HS928

GX270K1

4-stroke, overhead valve, single cylinder inclined by 25' ·---

270 cm 3 (14.8 cu in)

77 x 58 mm (3.0 x 2.3 in)

8.2: 1

Forced-air cooling

Transistorized magneto ignition --

20' B.T.D.C.

BPR5ES (NGK), W16EPR-U (DENSOI

Horizontal, butterfly valve type

No filter

Mechanical centrifugal governor

Forced splash type

1.1£ (1.2 US qt, 1.0 Imp qt)

TA and WA types: Recoil starter TAS and WAS types: Recoil starter and AC electrical starter

Primary circuit ground

FRAME

Model

Type

-Clearing width

Clearing height

Clearing capacity --·

Discharge distance

Continuous operating time

~e1 tank capacity

Snow-clearing mechanism

Snow throwing Right and left direction, angle Up and down

Auger Shape

Outside diameter

Set speed ~-

Auger height Number of positions adjustment Method

Blower Number of blades -.--------

Outside diameter

j Set speed ----------- .

Chute and chute guide control

PTO shaft to transmission

Main clutch Type

Operation

~ain transmission Type

Number of speeds

Transmission oil

Oil capacity

Sub transmission Type

Reduction ratio

Lubricant

:Orive method Type

Size

Traction speed Forward

Reverse

PTO shaft to blower

August clutch Type

Operation - --- -·-

Auger Type transmission

---Reduction ratio

Transmission oil

Oil capacity

r-

HS928

HONDA HS724 • HS928

HS928

TA I TAS WA I WAS

710 mm (28 in)

510 mm (20 in)

50 t/hr

15m 149.2 ft)

2.5 hours

5.3 £ (1.4 US gal)

2-stage

210°

70°

Spiral ... ~ 355 mm (14.0 in)

125 rpm

3-stage I --

Foot pedal ~- --3

300 mm 111.8 inl

1,370 rpm

Hand operated remote control

V-belt (SA291

Belt tension

Clutch lever

Hydrostatic transmission (HST)

Variable speed

Honda Hydrostatic transmission fluid

0.75£ (0.79 US qt, 0.66 Imp qt)

Constant meash

6.38: 1 6.00: 1 ----· Grease

Rubber track Wheel

120 X 60 X 21 14x40-6

0- 2.8 ft/sec (0- 0.85 m/sec) 0- 3.6 ft/sec (0- 1.10 m/sec)

0- 2.1 ft/sec (0- 0.64 m/secl 0 - 2.2 ft/sec (0- 0.66 m/sec) V-belt ILB35)

---

Belt tension ------··

Clutch lever -----

Worm gear

11 : 1

SAE #90 gear oil

0.16 f (0.169 US qt, 0.1411mp qt)

HONDA. HS724 · HS928

2. WIRING DIAGRAMS • H$724 TA and WA types o HS92B TA and WA types

ENGINE SWITCH

q fiJ ·-,

ENGINE ·1'~; GROUND

SPARK Pi UG

ENGINfo BLOCK

o HS928 TAS and WAS types

SWITCH ROX

STARTER SWITCH

"' I I • 1

1

<.:OIL

"";~ ;:.,::, ·+D

' -·

STAR1ER MOtoR

ii\ 0

loNGINE BLOCK

0 E

"''

ENGINE 1·. GROUND -

HS928

I • I

LIGHTING COIL

ENGINE SWITCH

P. "' ' I

J

ill

'

I • !

I ;__,·

:·'' ''12

I COIL

1 SPARK PLUG

\i

LIGHTING COIL

-----··-- -------

tl',mat• n. Btowo~ v , ¥~•k>"' 0 '0•~"1)~ 1\": ~u~ l.,'· \ og~1 1•'v• () ; \';r~!"' I~ I '0~1 ~·oo~

A j IW~ f> l'•n>

w •. 'f'!.n._w __ J.?: ---~---

"' l'llil•'~ . '! ~~-~ ~.~:~ •... • Yoii<JW

'" "'"" "' ''Q"' l>'u~

" I"'""" " l1~l1l ~·~a"

' ~-! n-~ ' p,,.

w·w"''"

•

SERVICE INFORMATIONS 1. GENERAL SAFETY 2. SERVICE RULES

HS928

6. SPECIAL TOOLS 7. TROUBLESHOOTING

HONDA Hsses

3. SERIAL NUMBER LOCATION 8. LUBRICATION POINTS 4. MAINTENANCE STANDARDS 9. CABLE/HARNESS ROUTING 5. TORQUE VALUES

GENERAL SAFETY ~Y attention to these symbols and their meanings: -· I Nh'dt'i@U Indicates a strong possibility of severe personal injury or death if instructions are not followed. LCAUTION: Indicates a possibility of personal injury or equipment damage if instructions are not followed.

• Stop the engine, and remove the spark plug cap before servicing the snowblower. • If the motor must be running to do some work, make sure the area is well ventilated. Never run the engine in a closed

area; the exhaust containes poisonous carbon monoxide gas. • Gasoline is extremely flammable and is explosive under certain conditions. Do not smoke or allow flames or sparks in

your working area.

CAUTION:

) ~eep BW'!_Y fr~-~ rotating or hot parts and high V'!_ltage wires when the engine is running.

SERVICE RULES 1. Use genuine Honda or Honda-recommended parts and lubricants or their equivalents. Parts that do not meet Honda's design

specifications may damage the unit. 2 Use the special tools designed for the product. 3. Install new gaskets, 0-rings, etc. when reassembling. 4 When torquing bolts or nuts, begin with larger-diameter or inner bolts first and tighten to the specified torque diagona,lly,

unless a panicular sequence is specified. 5 Clean parts in cleaning solvent upon disassembly. Lubricate any sliding surfaces before reassembly. 6. After reassembly, check all parts for proper installation and operation. 7. Many screws used in this machine are self-tapping. Be aware that cross-threading or overtightening these screws will strip

the female threads and ruin the hole. 8. Use only metric toots when servicing this unit. Metric bolt, nuts and screws are not interchangeable with nonmetric

fasteners. The use of incorrect tools and fasteners will damage the unit. 9. Follow the instructions represented by these symbols when they are used:

[ _P ____ ] · Indicates the reference page.

0 x 0 ( ) · Indicates the diameter, length, and number of the flange bolt used.

Apply grease Is ~OLJ Use special tool Apply oil

(Low temperature)

CAUTION: ~~rease ,

[ -u;~ -;;;-~tor ~ii may-caus;·ski~ ca~cer if repe~-iedl.(.left i~ coniact with the skin for prolonged periods. Although this is unlikely unless you handle used oil on a daily basis, it is still advisable to thoroughly wash your hands with soap and water as soon as possible after handling used oil.

·-----

NOTE

• Dispose of used motor oil in a manner that is compatible with the environmen·t. We suggest that you take i~ in sealed container to your local waste disposal site, or service station for reclamation.

• Do not throw it in the dustbin or pour it on to the ground, down sewers or drains. • Draining ?an be performed rapidly and completely while the engine is still warm.

HONDA HSB&!B

SERIAl NUMBER lOCATION

HS928

Serial numbers of the engine and frame are stamped on the engine crankcase and frame as illustrations shown. Always specify these numbers when inquiring about the snowblower or ordering parts in order to get correct parts for the unit being serviced.

ENGINE NUMBER

FRAME NUMBER

HS928

2. SERVICE INFORMATION HONDA HS724 • HS928

I_ -~~ M;~N~E~ANCE STAND. ARDS I. 2. TORQUE VALUES ~ ~ - - ---- -- - ~-··.

------- -~ 3. SPECIAL TOOLS 4. CABLE/HARNESS ROUTING

--------·-···--- ,_,_ -·---- __ , ___________ _

1. MAINTENANCE STANDARDS •ENGINE HS928

Part

Engine

Cylinder

Cylinder head

Piston

Item J M8~imum speed-r Idle speed ' Cylinder compression I

j Sleeve 1: D.

' Warpage

Skit 0. D. Piston-to-cylinder clearance Piston pin bore I. D.

Standard

3,600 ± 150 rpm 2,100 ± 1 50 rpm

588- 834 kPa (6.0- 8.5 kgf/cm 1,

85.3 120.9 psrl at 600 rpm r·-f- 77.00 mm (3.031 in)

~t- 76.985 m~(3.0309 in)

Service Hrnit

76.85 mm 13.026 in) 0.12 mm (0.005 in)

18.042 mm (0.7103 in) - ---- -------~ ·-····-~---ro 015-0.052 mm 10.0006-0.0020 in)

18.002 mm (0.7087 in)

Piston pin

Piston rings

Connecting rod

Crankshaft

Valves

Piston pin 0. D. 18.00 mm 10.709 in) Piston-to-piston pin clearance _ 02 -~ 0.01~_mm (~-~0.?01- 0_.0006 in)

Side clearance Top/Second 1 0.015-0.045 mm 10.0006- 0.0018 in) End gap Top/Second ~ 0.2-0.4 mm (0.01- 0.02 in)

Oil 0.2- 0.7 mm 10.01-0.03 in) Ring width Top/Second 2.0 mm (0.08 in)

----- '' "--·---- ··-- """ -----------sriiall end 1. D. 18.005 mm 10.7089 in) Big end I. D. 33.025 mm (1.3002 in) Big end oil clearance 0.040- 0.066 mm 10.0016- 0.026 in) Big end side clearance 0.1 - 0.7 mm (0.004- 0.028 in)

-- ·-Crank pin 0. 32.985 mm (1.2986 in)

1 Valve clearance IN

EX IN

EX

0.15 ± 0.02 mm 0.20 i 0.02 mm

6.59 mm (0.259 in) 6.55 mm 10.258 in)

I 1 Stem 0. D.

- --- --l Valve guides Guide I. D. IN/EX

IN 6.60 mm 10.260 in) I

Stem~to·guide

lclearance

_val~e sprin~-~- ~p-~i~-~ free len~~h

0.010-0.037 mm 10.0004-0.0015 in) EX 0.050-0.077 mm 10.0020- 0.0030 in)

IN/EX ____ ~()_mm (1:54 in)

1.1 mm 10.04 in)

17.95 mm (0.707 in) 0.08 mm (0.003 in)

- -----0.15 mm (0.006 in)

1.0 mm (0.04 in) 1.0 mm (0.04 in)

1.75 mm (0.069 in) -----· -- ----. 18.07 mm (0.711 in) 33.07 mm (1.302 in) 0.12 mm 10.005 in)

1.0 mm (0.04 in)

32.92 mm 11.296 in)

6.44 mm (0.254 in) 6.40 mm (0.252 in)

6.66 mm 10.262 in) 0.10 mm (0.004 in) 0.12 mm 10.005 in)

Cylinder head Seat width

Camshaft Cam height

37.5 mm (1.48 in)

2.0 mm 10.08 in) ---j~---

IN 31.52-31.92 mm (1.241-1.257 in) 31.35 mm (1.234 in) EX 31.51-31.96 mm 11.243- 1.258 in) 31.35 mm (1.234 in)

Camshaft O.D.

Crankcase cover Camshaft holder 1.0.

Carburetor Main jet Float level Pilot screw opening

-~--·-r --------- ---" -Spark plug Gap

Ignition coil

Plug cap resistance ----- ---- ----

Primary coil resistance Secondary coil resistance Air gap (at flywheel)

15.984 mm 10.6293 in) 15.92 mm (0.627 in)

16.0 mm (0.63 in) --------------- ~-----

#92 13.2 mm 10.52 in)

2 rurns out

0.7-0.8 mm (0.028- 0.031 in) 7.5-12.5 kn

.. -- -------- ---·-- -0.8- 1.0 il 5.9-7.1 kll

0.4 .l 0.2 mm (0.016 .t 0.008 in)

------· --

HONDA HS724 • HS928

2. TORQUE VALUES • ENGINE

Item

Cylinder head bolt IHS928)

IHS7241

Rocker arm pivot lock nut

Rocker arm pivot bolt

Crankcase cover bolt

Connecting rod bolt (HS928)

(H$7241

Muffler mounting nut

Air cleaner mounting nut (HS928)

iHS7241

Air cleaner wing nut -- ---

Oil drain bolt IHS928)

iHS724)

Oil drain extension (HS928)

Fuel tank mounting bolt, nut IHS9281

IHS7241

Fuel sediment cup (H$724)

Fuel filter joint nut

HS92B

Thread dia. x pitch Tightening torque

M10x 1.25 ----------

M8 X 1.25

M6 X 0.5

M8 x 1.25 (special bolt) ---- -------·-M8 X 1.25

M8 x 1.25 (special bolt)

M7 X 1.0

N•m 34

24 10

24

24

14

Max 1.25 '---'-----+--"

M6 X 1.0

M6 X 1.0 --------

M6 X 1.0

M10 x 1.25 (special bolt) - --

10

9

23

M10x 1.25 18 ,_ --,--M-12 ;-,-=.2-::-5----+---::23

~-~k\l_f•m 3.5

2.4

1.0

2.4

2.4

1.4

1.2

2.4 ~---------

0.9

1.0

0.9

2.3

1.8

2.3

M8 X 1.25 --+

24 2.4

M6 X 1.0

M24 X 1.0 -----···-:-c:--c-­

M10 x 1.25 (special nut)

10

4

2

1.0

0.4

0.2

lbfoft

25

10

9 -

17 -----

6.5

7

6.5

17

13

17

17 - --------- ·--

7

2.9

1.4 -~,~ ~' ~'-' ---- ,,~------

Flywheel nut IHS9281

IHS724)

• HYDROSTATIC TRANSMISSION

Item -------· --

Auger transmission drain bolt

Port plug bolt

Check valve bolt

Pump case bolt

Transmission case bolt

Drain plug bolt

Neutral valve arm bolt

Oil seal holder bolt

Trochoid housing bolt

Bearing holder bolt

M16 x 1.5 (special nut) I---

M14 x 1.5 (special nut)

113

74

83

54

Tighten in_~ torque ___ , Thread dia. x pitch

____ --~-:--:-c---)-~ _l<gf•m lbf.ft M8 x 1.25 (special bolt) 18 1.8 13

M10x 1.25 -+-~- ~-·

M10x 1.25 -- -· ------------

M8 X 1.25

MB X 1.25

M14 X 1.25

M6 X 1.0

M6 X 1.0

M6 X 1.0

M6 X 1.0

___ ,_, _____ 19

19

20

20

39

10

10 --- -··-- -------

10

10

-------

~

1.9 14

1.9 14 ---- ------

2.0 -- ---2.0

·-----4.0

~----

1.0

1.0

1.0

1.0

--

14 ,, ___ -

14 ----~-

29

7

7

7

7

3. SPECIAL TOOLS No.

1 2 3 4

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Tool name

Float level gauge Attachment 32 x 35 mm Attachment 52 x 55 mm Attachment, 62 x 68 mm Driver, 40 mm I. D. Attachment, 30 mm I. D. Pilot, 15 mm Pilot, 25 mm Pilot, 30 mm Driver Valve seat cutter #114 60" Valve seat cutter #122 45" Valve seat cutter #1 15 3P Valve seat cutter #111 60'' Valve seat cutter #128 30'·- 45' Soild pilot bar, 6.60 mm Soild pilot bar, 6.62 mm Soild pilot bar, 6.65 mm Soild pilot bar, 5.50 mm Soild pilot bar, 5.52 mm Soild pilot bar, 5.55 mm T-wrench, #505 T-wrench adapter, #503-1 Accessory package #246 Flywheel puller Valve guide driver, 6.6 mm Valve guide driver, 5.5 mm Valve guide reamer, 6.6 mm Valve guide reamer, 5.5 mm

\ ' _,

HS928

Tool number

07401-0010000 07746-0010100 077 46-001 0400 07746-0010500 07746-0030100 077 46-0030300 077 46-0040300 07746-0040600 077 46-00407 00 07749-0010000 07780-P01020A 07780-P01030A 07780-P01040A 07780-P01050A 07782-P01010B 07781-P02010A 07781-P02020A 07781-P02030A 07781-P03010A 07781-P03020A 07781-P03030A 07782-P01010A 07782-P01020A 07782-P01030A 07935-8050002 07942-6570100 07942-8920000 07984·ZE2000D 07984-2000000

or 07984 200000C

(§_)

-- ;.1

HONDA HS724 • HS928

--~plic~!i9_~_ Carburetor float level inspection Balancer bearling installation {HS928) 6205 radial ball bearing installation IHS7241 Crankshaft bearing installation Drive for tools 6 Crankshaft bearing installation Balancer bearing installation IHS9281 6205 radial ball bearing installation IHS7241 Crankshaft bearing installation iHS92BI Driver for tools 2, 3, 4, 7, 8 and 9 Valve seal reconditioning (HS92BI Valve seat reconditioning (HS724) Valve seat reconditioning {HS724) Valve seat reconditioning {HS724) Valve seat reconditioning (HS928) Valve seat reconditioning \HS928) Valve seat reconditioning {HS928) Valve seat reconditioning iHS928) Valve seat reconditioning { H$724) Valve seat reconditioning (HS724) Valve seat reconditioning (HS724) Valve seat reconditioning Valve seat reconditioning Valve seat reconditioning Flywheel removal Valve guide removal/installation IHS9281 Valve guide removal/installation iHS724) Valve guide L 0. reaming (HS928) Valve guide I. D. reaming iHS724l

(6) (7 __ ;-(~)

: I

__ ..J__)J

H$928

TROUBLESHOOTING e ENGINE a. GENERAL SYMPTOMS AND POSSIBLE CAUSES

Hard starting

Engine lacks power

Readjust P. 3-5 Disassemble and inspect P. 5-3

IGNITION COIL air gap misadjusted

- Readjust P. 7-2

Readjust P. 3-9

inspect and correct P. 8-3

CYLINDER, PISTON or PISTON

RING worn Disassemble and inspect P. 10-1 and 10-2

HONDA HSS2B

Engine will not rev sufficiently

Poor performance at high speed

Poor perlormance at low speed

HS928

HONDA HSB2S

b. HARD STARTING

<MECHANICAL CAUSES>

[I .!:1~) ~C~h~ec~k~f~u~e~l ~le~v~e~l.======}--1----- No fuel ------1:::!•~F~i~ll~w~i~th~fu~e~l~a~n~d~s~ta~r~t~a~g~ai~n~. =]

L Suff1c1ent fuel 1n tank

2) Adjust the throttle cable that is linked choke (P. 3-9).

3) Remove spark plug and check. Dry --------~----------------~ • Check for blockage of filter and dis­

connect or damaged of fuel tube. • Check for blockage of port and noz­

zle of carburetor.

'----- Wet ------~r..-;-;:CI;::e:a:n-.:e-;:le:::c:::tr:::o::;d:es;::an:::d:;-:re:::s:::ta::,:::,,:::,.~k:;i:Jng care that choke is not closed toe much.

4) Install the spark plug cap and try spark test ·{P. 2-1 0)

• CYLINDER COMPRESSION TEST

1) Remove the spark plug cap and the spark plug.

Good spark

I Go to P. 2-9

l

2) Install a compression gauge in the spark plug hole. 3) Crank the engine several times with the recoil starter and

measure the compression.

COMPRESSION 6.0-85kg/cm' (85-121 psi) at 600 min-1 (rpm)

• If flooding is severe, check carbure­tor float valve.

COMPRESSION GAUGE (COMMERCIALLY

AVAILABLE)

5) Install the compression gauge in the spark plug hole and crank the engine several times.

6) Install the spark plug and restart the engine.

d. AC STARTER MOTOR

<ELECTRICAL CAUSE>

HS928

I From P. 2-18.

L Abnormal co

Normal camp

mpression -------1

ression

HONDA HSB2B

e Check for incorrect valve clearance.

e Check for loose cylinder head bolts.

• Check for heavy carbon deposits in combustion chamber.

• Check for defective cylinder head gasket, valves or valve seats.

e Check for worn piston rings, pis­ton or cylinder.

r STARTER MOTOR does not operate J

l I

Check that electricity is available at the

of the power cord.

end ]~ ___ N_O_E~L_E_C_T_R_IC_IT_Y ____ ---1 I

• Turn receptacle switch ON. e Plug cord into a functioning receptacle. • Replace power cord.

1 OK

~~~------~~~~~--------1-----~N~O~G~O~O~D~----~f r Replace starter switch. Check starter switch (P. 1 8-3) f

r Check diode connections. I _____ _cN~O:__G~O=O':"D _____ I c . l L__o~n_n_e_c_t_o_r_r_e~p_a_"_· _________ _

j OK

r Check diode IP. 18-4) NO GOOD Replace diode.

r Check starter motor (P. 18-4 and 1 8-5) 1-----N~O::o._:G~O=O:.:D:__ ___ r Replace starter motor.

HS928

HONDA. HSB2B

c. IGNITION SYSTEM TROUBLESHOOTING

I 1) Engine does not start. I

I 2) Perform the spark plug test. I

133~) (c)h;;e;;c;kk-a;g~a;;iiinn~w;;ittth;-;;a-n;;e;w;;~sp~a;-;r*k-l-j----,---- Sparks ------------[1 ~·~~R~ep~l~a~c~e~t~h~e~s~p~a~r~k ~p~l u~g~.Jj plug.

'-----No sparks

~~ Disconnect the black wire from the 1 l engine sw1tch and recheck.

Sparks

~-j Check the high tension cord for 1 1 frayed insulation or other defects. j

Faulty insulation

• Faulty engine switch. • Replace the engine

switch. • Loosen the connector.

--------1 • Faulty ignition coil.

Measure the resistance of the prim­ary and secondary sides of the tran­sistorized ignition coil (P. 7-2).

Out of specification -------1 • Replace the ignition coil.

• SPARK PLUG TEST

1) Remove the spark plug, attach it to the spark plug cap, and ground the side electrode against the cylinder head cover.

2) Turn on the engine switch, pull the recoil starter and check to see if sparks jump across the electrodes.

MMd'd' 1

• Never hold the spark plug lead with wet hands while performing this test; severe electrical shock may result.

• Gasoline is extremely flammable and is explosive under certain conditions.

• Fuel vapor or spilled fuel may ignite. If any fuel is spilled, make sure the area is dry before starting the engine. Do not allow sparks near the spark plug hole.

e FRAME

a. HYDROSTATIC TRANSMISSION

HS928

HONDA HSBE!B

Snowblower does not move to forward and backward when the shift lever is moved.

1) Check that the transmission release lever is correctly positi-oned and is not damaged.

GOOD

I

2) Check the cables and linkages of the drive clutch lever and shift lever for damage.

GOOD

r 31 Make sure the cross shaft of the I hydros~atic transmission rotates.

ROTATES

14) Make sure the wheel shaft / rotates.

'--

L_,.

• Transmission release lever __, arm is set to the left side (released).

• Transmission release lever__, is damaged.

e Loose or damaged cables . ..,....____...,

• Set the transmission release lever to the right side (self~

propelled side). • Replace the transmission release

lever (P. 14-5).

• Reinstall and readjust the cables.

e Replace the cables if necessary.

e Damaged linkage 'I e Replace the linkges with new . ones.

• Rotates. Damaged parts around the track. e Replace any damaged parts.

- • Does not rotate. -------1 Damaged right transmission. • Inspect and replace if necessary. DOES NOT ROTATE

r 3-1) Check the hydrostatic trans- I

mission fluid level ((P_ 3-3). I

GOOD

l 3-2) Check the drive belt for ~---• damage. .

~~ I G-O~O~D-----

3-3) Check that the pump shaft of the hydrostatic transmission rotates. I---~

ROTATES

3-4) Check the spring pin that is driven in the clutch arm of the hydrostatic transmission for damage.

GOOD

• Hydrostatic transmission-­fluid level is low.

• Fill the hydrostatic transmission fluid to the upper level {P. 3-3).

• Bleed the air (P. 14-9). e Check the hydrostatic transmis­

sion for leaks. (P. 2-15).

---------j·l e Replace the linkages with new • Damaged. . one

• Does not rotate. -------1 Worn spline of the pump shaft and wheel driven pulley. • Replace the pump shaft and

wheel driven pulley.

----•1 e Replace the spring pin with new • Damaged or broken. -· one.

• Internal faults in the hydrostatic transmission. Go to page 2·16.

HONDA HSB2B

2. Snowblower moves only forward or backward.

11) Check the shift lever linkge for I damage. I

GOOD

•

HS928

Damaged or faulty. Loosen the cable .

• Reinstall and readjust the cable (P. 14-12).

Faulty shift lever linkage. • Adjust the shift lever (P. 14-12). Damaged shift lever linkage. • Replace any damaged parts.

I 2) Check the hydrostatic transmis- ! sion fluid level (P. 3-3). I • Hydrostatic transmission _____., • Fill with hydrostatic transmission

fluid level is low. fluid to the upper level {P. 3-3).

• Check the hydrostatic transmis-sion for leaks {P. 2-15).

GOOD

Damaged check valve spring.

[3) Check the check valve for I • Damaged. Damaged,steel ball or the attach-

damage. I ing surface between the check valve and the distributor.

• Replace any damaged parts .

GOOD

le Internal faults in the hydrostatic transmission. Go to page 2-16.

3. Speed is too slow.

1) Start the engine and check the idle speed.

--~-- • Idle speed is low. ----~.l-e0A~dii:ju~s;;;t-;t.;:h~e:iiidd!;le~sp;;;e;;;e;;d;-;;(P;-.-:3~-:;:5:;)-. I

IDLE SPEED IS STANDARD.

2) Check that the transmission release lever is correctly positi­oned and is not damaged.

GOOD

• Faulty transmission release lever.

• Hydrostatic transmission

Transmission release lever is incor­- rectly positioned.

• Set the transmission release lever to the right side (self -propelled side).

Damaged neutral valve arm. • Replace the transmission release

lever with a new one.

3) Check the hydrostatic transmis­sion fluid level (P. 3-3). fluid level is low. -

• Fill with hydrostatic transmission fluid to the upper level (P. 3-3). Check the hydrostatic transmis­sion for leaks (P. 2-15). GOOD

_4"!_1 ~C~h~e=c~k~t~he~d~r'.'iv'tle~b~e~l~t ~fo~r~w'tle>l3""'·~_j----- e Worn.

j GOOD

5) Check the clutch arm of the hydrostatic transmission for damage.

GOOD

f-----• Damaged.

--~-------------

•

• Replace the dnve belt w1th a nejw one

Damaged clutch arm or hole of the clutch arm spring pin. • Replace the clutch arm of the

hydrostatic transmission.

e Internal faults in the hydrostatic transmission. Go to page 2-16.

4. Snowblower lacks power.

111" Make sure the hydrostatic trans-mission does not overheat.

" "

DOES NOT OVERHEAT

12) Start the engine and check the L idle speed

j IDLE SPEED IS STANDARD ~·

3) Check that the transmission release lever is correctly positi-oned and is not damaged.

GOOD

4) Check the hydrostatic transmis-sion fluid level (P. 3-3).

GOOD

5) Check the drive belt for wear. I

GOOD

6) Check the clutch arm of the hydrostatic transmission for damage.

GOOD

5. Snowblower can not move at fixed speed

l1) Start the engine and check the / idle speed.

IDLE SPEED IS STANDARD

l2) Check the hydrostatic transmis- I sian fluid level (P. 3-3). 1

GOOD

l3} Check _the check valve for I damage J

GOOD

HS928

HONDA HSB2B

• Overheats. --------.f4e~C:;hhe~c;k~a~n~d-a;;:ddiilt:u~s~t -;.;;a;;:c:;;h~p;;a;;rt-:o~ffl the hydrostatic transmission.

• Idle speed is low ----~l!_'leei!A\;dl;j;:;us;;tt"tiih;;e;-;;:idji;le~s;;p;;e;;eddi(PP-. ,3~-5;;);-. -jl I .,~~ .. 00 ,.- , ••• ,~, rectly positioned.

• . • Set the transmission release ;aulty transmiSSion relese- lever to the right side (self-ever. propelled side).

Damaged transmission release

e Hydrostatic transmission fluid lever is low. -------.

1 lever.

l. • Replace the transmission

release lever With a new one.

• Fill with hydrostatic transmission fluid to the upper level (P. 3-3).

• Check the hydrostatic transmis­sion fluid for leak (P. 2-15).

e Worn. ----- ~---1 • Replace the drive belt with a new one

• Damaged. --------1 Damaged clutch arm or hole of the clutch arm spring pin. • Replace the clutch arm of the

hydrostatic transmission.

• Internal faults in the hydrostatic transmission. Go to page 2-16.

e Idle speed is low. •I • Adjust the idle speed (P. 3-5).

Hydrostatic transmission -----.. • Fill with hydrostatic transmission • fluid to the upper level (P. 3-3). fluid level is low. • Check the hydrostatic transmis-

sion for leaks (P. 2-15).'

• Damaged Damaged check valve spring. Damaged steel ball or the attaching surface between the check valve and the distributor.

• Replace any damaged parts .

• Internal faults in the hydrostatic transmission. Go to page 2-16.

I

HONDA HSB2B

6. Downhill speed on slopes is too fast.

CAUTION:

HS928

• To avoid loss of control. and possible damage, do not move the transmission release lever to the RELEASED (left) position on a downhill slope.

1) Start the engine and check the idle speed.

IDLE SPEED IS STANDARD

2) Check that the transmission release lever is correctly positioned and is not damaged.

GOOD

l_3} Check the hydrostatictransmis sian fluid level (P. 3-3).

--- -- ----~--- -

GOOD

e Idle speed is low.-------[! Adjust the idle speed (P. 3-5). J

• Faulty transmission release lever.

e hydrostatic transmission-1\uid \eve\ is low

Transmission release lever is not in the correct position. • Move the transmission release

lever to the ENGAGED (right) position.

Damaged transmission release lever. • Replace the transmission release

lever with a new one.

0 Fill with hydrostatic transmission fluid to the upper level (P. 3-3).

e Check the hydrostatic transmis­sion fluid for leaks (P. ~- 1 5).

f,~MMaa~k;;e~s:;:u;;r;e~thh:e;;hhyyd~r;;o;;s:l:ta;1tj,ic~tt;:r;;an;:;s;-0----- e Overheats .. ---------!• Je_c-'--h-•c_k_:_a_n.:_dc__a_dJ~· u_s_t:_e_a:_c_h_:_cp:_a:_rt_of__J mission does not overheat. L_ the hydrostatic transmission.

DOES NOT OVERHEAT • Internal faults in the hydrostatic

transmission. Go to page 2-16

7. Shift lever is hard to move or moves whils running {on flatland or a gentle slope).

1

1) Check the frictional load of the shift lever. r

GOOD

0 Faulty frictional load. -----1 0 Adjust the frictional load of the I shift lever (P. 16-2)

• lnterna_l f~ults in the hydrostatic/ I transm1Ss1on. Go to page 2-16. I

8. The snowblower cannot be moved by pushing it, with the transmission release lever in the RELEASED (left) position.

1) Check the neutral valve arm for damage.

-,------------~

GOOD

2) Check for clogged tracks.

GOOD

• Damaged.--------foo;;a-;;m:;:a~g~e;;d:;-:tt;r;;a-;;n"Ss;;m;-;i"Ss;;,.;;o;;n;-;r~e;!le;a;;sS.e~ lever 0 Replace the transmission release

lever with a new one. L___________________J

• Tracks clogged. ------<~clear the tracks.

• Internal faults in the hydrostatic transmission. Go to page 2-16.

9. Overheating

1) Check the hydrostatic transmis- I sian fluid level (P. 3-3).

GOOD

2) Make sure the recommended transmission fluid is used in the hydrostatic transmission.

CORRECT FLUID

3) Check that the hydrostatic transmission is clean.

CLEAN

4) Make sure the snowblower is I used correctly.

CORRECTLY

10. Hydrostatic transmission fluid leak.

[_Hydrostatic transmission fluid leak.

HS928

• Hydrostatic transmission fluid level is low.

• Wrong fluid

• Dirty

• Incorrectly

• Clogged air vent hole of the __...._..__.__. reservoir of high pressure inside the reservoir caused by a high fluid level.

• •

•

,.

HONDA HSB2B

Fill yvith hydrostatic transmission fluid to the upper lever (P. 3-3). Check the hydrostatic transmis-sian for leaks.

Change the hydrostatic trans-mission fluid to the recom-mended fluid.

Clean the hydrostatic transmis-sian.

Increased negative load by incorrect use. e Advise the operator about correct

use.

• Internal faults in the hydrostatic transmission. Go to page 2-16.

• Glean the air vent hole of the reservoir.

• Fill the reservoir to the correct level. (P. 3-3).

• Replace the oil seal with new one.

e Loosen the case bolts.---~·.f[£i--;•;:-;;R:et;;,g;;-h;;t;;e:;n-;-t;;h;;e;-::-ca;;:s;:e~b;;o;;lt;s-. --~

• Loosen the port bolts or __ ~ check valve bolts.

• Faulty washers --------1

• Retighten the port bolts. Check valve bolts or drain bolt.

Damaged washers of the drain bolt or pump case.

• Replace any damaged parts.

Go to page 2-16.

·-------·- -- ---------- -----

I

HONDA HSB2B

From page 2-15.

HS9Z8

f--- e Faulty 0-rings ------•1 • Replace any damaged 0-rings (P. 14-3, 4, 5). • Port bolts • Check valve bolts • Control bowl • Oil seal holder • Neutral valve

• Faulty oil seal ------~1..:-:R::-e-p-:l-a-ce-:a-n_y_d-;-a_m_a-ge-d-;--o-:il_s_e_a~ll

(P. 14-3, 4, 5). • Pump case e Neutral valve • Rear transmission case • Oil seal holder!

------ • Faulty pump case or rear ---llo;a~m;.;a~ged;;d~g~a;sk~e~t;s~o~r~c~a~s~e;s.---l transmission. • Replace any damaged parts.

b. INSPECTION OF THE HYDROSTATIC TRANSMISSION (HST) FOR INTERNAL FAULTS

CAUTION:

• Clean the surroundings not allow dust. or other foreign materials to enter the hydrostatic transmission before disassembly or reassembly.

• Disassemble and reassemble of the hydrostatic transmission is in the clean area. Avoid getting dust on the parts. • Handle the parts carefully to avoid damage. • When wiping off the oil adhering to the parts, use a lint~free paper towel.

NOTE:

• Clean the passages of the hydrostatic transmission with high pressurized air. • Clean all the parts of the hydrostatic transmission before assembling them. • Disassembly and repair of the hydrostatic transmission must be done according to troubleshooting procedures after

checking the all important factor except the hydrostatic transmission. ·- ·-·- -· ~----·--

1) Check the control bowl for damage and needle bearing for wear or ___... Replace the damaged parts. damage.

2) Check the spline between the pump shaft and the driven pulley for___.... Replace any damaged or won parts. wear or damage.

(CONT'D)

HS928

(CONT'D)

HONDA HS828

3) Check the sliding surface between the pistons and the cylinders---+-Replace any damaged parts. for wear or damage.

NOTE [ Replace the cylinder. and cylinder plate as a set.

4) Check the pistons and springs for wear. -----------_.Replace the pistons or springs.

5) Check the sliding surface between cylinder and the cylinder plate -----Replace the cylinder and cylinder plate. for wear or damage.

NOTE

LCR~e~p~la~c~e~t~h~e~c~y~li~n~d~er~an~d~c~yl~in~d~e~r~p~l~at~e~a~s~a~s=e=t.-------J

6} Check the spline between the motor shaft and the bevel gear for~ Replace any damaged or worn parts wear or damage. Check the thrust bearing for wear.

7) Check the trochOid housing and trochoid pump for damage.-----+­Check the check valve spring, attaching surface between the check valve and the distributor and steel ball for damage.

Replace any damaged parts.

8) Check the suction filter for clogging.-------------. .. Clean or replace the suction filter.

9) Check the distributor plate for cracking or damage.--------- Replace the damaged parts.

1 0) Check the bevel gear for damage and check the serration of the---- Replace the damaged parts. cross shaft for wear.

1 1) Check the transmission release lever for damage.--------..- Replace the damaged parts .

c. GENERAL SYMPTOMS AND POSSIBLE CAUSES

1) Snowblower does not move when engaging the drive clutch lever (The shift lever is not in the neutral position).

. .

SERVICE Bl)LLETIN #19 =>

• Faulty adjustment of the drive clutch cable -----------Adjust P. 3.6 • Transmission release lever is set to the RELEASED {left)

position. -----------------------+-Set the transmission release lever to the ENGAGED (right) position.

• Broken the 6 mm pin on the wheel shaft.------------o~ Replace P. 15-1 • Faulty adjustment of the shift cable. Adjust P. 14-12

2) Auger does not rotate when engagmg the auger clutch lever. • Faulty the adjustment of the auger clutch cable.--------•Adjust P. 3·7 • Damaged or worn the auger dive belt Replace P. 13-1 • Broken the auger lock bolt Replace P. 12-1

-·--------

HONDA HSB2B

3) Chute does not operate. (Up and down)

HS928

• Damaged of faulty adjustment of the chute guide cable.-----+- Adjustment P. 3-5 Replace P 17-2

Emergency procedure: Remove the chute guide cable adjustment nut, and remove the chute guide bolts. Remove the collars between the chute guide and its bolts. Set the angle of the chute guide as desired. Tighten the chute guide bolts and adjustment nut in order to fix the chute guide.

I - -

{Right and left) SERVICE BULLETIN #19 =>

• Incorrect clearance between chute drive gear and the chute ring gear. Adjust P. 1 1-2

• Damaged or worn chute gears.---------------- Replace P. 11-1 • Broken pins of the chute crank. Replace P. 11-1 Emergency procedure: Remove the chute drive gear bracket. Set the angle of the chute as desired and install the chute drive gear bracket.

4) Snow is not thrown from the chute. • Clogged snow in the chute.----------------4~ Remove the snow using a stick. • Broken blower shear bolt. Replace P. 1 2-1 • Cut auger belt. Replace P. 13-1

5) Abnormal sound is heard or abnormal vibration is ielt. • Loosen each bolt and nut.----------------- Retighten.

6) Track slips. • Track tension is insufficient.---------------- Adjust P. 3-4

------------------

HS928

• PERFORMANCE TEST

CAUTION:

[ Perform this test on the asphalt is wet.

1) Start the engine and adjust the maximum engine speed (P.

3-9).

Maximum engine speed: 3,600 ± 150 min-1 (rpm)

2) Run the snowblower at maximum speed for a few minutes to raise the oil temperature in the hydrostatic transmission.

3) Position the shift lever to obtain the following speed:

DISTANCE TIME

1 m (3.3 ft) 5-8 second

4) Place the snowblower against the wall as shown, and position the shift lever as 1n step 3.

5) Check that the tracks slip aga1nst the floor when the drive clutch 1s engaged.

CAUTION:

LDo. not slip the tracks for mor':_ than fiv'-'e"'-'m:::i:::n_:u.:_te,s:::· ______ ___J

HONDA HSB2B

NEUTRAL (N)

SHIFT LEVER

WOOD BLOCK

HONDA HSS2S

LUBRICATION POINTS

CHUTE GUIDE

.-.&a

CHUTE DRIVE GEAR AND RING GEAR

HS928

CLUTCH LEVER

LEVERS

.-, SLIDING SURFACE •• SliDING SURFACE

...... , SliDING ---= fW SURFACE · '

HONDA HS624·HSB28

3. CABLE/HARNESS ROUTING

DRIVE CLUTCH CABLE

AUGER CLUTCH CABLE

\ \ '

WIRE HARNESS BAND

\\ ----\----)

i~-1 ! ; r / r I __./ I / ,~---LL_ __ -.:s_.~__.

SHI CABLE

HS928

THROTTLE CABLE

ENGINE SWITCH WIRE

SHIFT CABLE

BAND

THROTTLE CABLE

~DRIVE GUIDE CABLE

CHUTE GUIDE CABLE

WIRE HARNESS BAND

HONDA HS724 · HS928

HS92B

3. CABLE/HARNESS ROUTING • TA and WA types only

ENGINE STOP SWITCH

DRIVE CLUTCH CABLE

(clamped)

CHUTE HANDLE / CHUTE GUIDE CABLE

/

(not clamped)

Sl"\----' \ /L , e \ /;~:::: . --=-., ~

,)

~/ :- .,,

""' '·", IGNITION COIL I

AUGER CLUTCH CABLE

(clamped) GROUND TERMINAL

WIRE

DRIVE C CABLE

AUGER CABLE

HSBZB K1

HS624 K1

GROUND WIRE

CHUTE

GROUND CABLE

CLAMP

HS928

CABLE

1 WIRE HARNESS BAND (HSBZB only)

IGNITION PRIMARY

AC STARTER SWITCH WIRE

HONDA HSB24•HSS2S

._CABLE GUIDE

3181f:J 31J.J.OIJHJ.

38nJ. !JNIJ.:J3J.Oild

BCIBSH • too89SH

YQNOH 9Z6SJ..I

3. MAINTENANCE

[~~_MAINTENANCE ~CHE':ULE_

1. MAINTENANCE SCHEDULE SERVICE PERIOD 121

l Perform at every indicated year or operating

-·-·--·

hour interval, whichever comes first.

·~---Engine oil -- - -~~~~-<?-~. l~vel _.

_ i __ __ _L~hange _

-~eplace

1

' Transmtsston 011

• Spark plug

Auger sktd shoes and Check-Readjust scraper

- ---···--T_ra_ck _____ . ____ . __ A_cji~

Tires Check

Auger and blower shear Check bolts

I Bolts, nuts, f~-~teners ~- ·check j' ·------ -- .. -~-----------.I Sediment cup Clean

HS928

-------

EVERY YEAR

EACH USE

FIRST 20 HRS. BEFORE

OPERATION OPRATION

0

HONDA HS724 ·HS928

REFER TO

PAGE

3-2131

3-3 131

3-3 131

12-4 131

3-4131

3-4 131

-r-~:0~~~~i-~-nd _c~rbure-t~·;_--__ o~_-___ --~~ • Idle speed __ __ Chec~-Adjust ____

1

__ 1

__ J· ' ·--. _

______ A£ply _,;! 2-20 131 c~eck.:_Readjust _____ -(; 111-r--__ [. 3-5131

3-4 131

3-6131

3-5 131.3·1 141 u

Chute glJide control cable 1 A_~.er clutch cable

Drive clutch cable

Throttle cable

Ch."_ck-Re_adjust +-~ i ( 111 ' ' 3-7 131

~~:~t:_:::~[:: ----j~-= 1 ~;:~i--f -~ f~~-- -+-------!

• Fuel line

• Valve clearance

• Fuel tank and filter

• Emission related items.

Check (Replace Every 2 years if necessary)

---Check-Re_adju~

Clean

{ 1) These items may require more frequent inspection and replacement under heavy use.

0 0

{2) For professional commercial use, log hours of operation to determine proper maintenance intervals. 131 See the base HS828 shop manual. 141 See the HS1132 supplement.

3-6131

3-12131

3-6 131

•

HS928

ENGINE OIL OIL LEVEL CHECK

NOT.c::E.:_• __ ---------------:-----:~-, Drain1ng can be performed more rapidly and completely while I the engine ts still wa:crc.mc.c.. ------------

1) Place the snowblower on a level surface. 2) Unscrew the oil filler cap/dipstick. and wipe it dry. 3) Insert the oil filler cap/dipstick all the way in, then remove it

and read the engine oil leveL

NOTE.

~~.-t.a-~o-0t-3s-~-~-~w-.:.-;;d~-~flller cap/dipstick In, otherw1se you ~'IJ

4) If the engine oil level is low, fill to the top of the oil filler neck with the recommended oil Do not overfill.

~commend­ed engine oil

OIL CHANGE

Us~ Honda 4~stroke oil or an equiva-i~nt I high-detergent, premiurn quality motor oil I certified to meet or exceed U.S. auto~ ' mobile manufacturer's requirements for Service Classification SG, SF/CC, CD. Motor oils classified SG, SF/CC, CD. will show this designation on the container. SAE 5W-30 is recommended for general, all temperature use. Other viscosities shown in the chart may be used when the average temperature in your area is within the indicated range.

NOTE _____________________ _

,!. Dram the engine oil with the engine warm and the snowblower on level ground to assure complete and rapid

L draining. -·--- ---------'

1) With the engine stopped. Remove the 01! filler cap/dipstick and drain bolt Allow the oil to drain completely.

2) Remstall the dram bolt and tighten to the spec1fied torque.

TORQUE: 23 N·rn (2.3 kg-rn, 17 ft-lbl

3) Fill the crankcase w1th the recommended engme oi1 to the outer edge of the oil filler neck. Remsta!l the filler cap/dipStick

r-

L___ Engme 011 cpoacity 111(116USqt,o.971mpqt) J 4) Reinstall the oil filler cap/dipstick and tighten it securely

CAUTION:

~ • Do not overfill with engine oil. ~

I • Check the engine oil with the snowblower on level ground.

•1

• Used engine oil may cause skin cancer if repeatedly left in I' co.n~act ~ith the skin for prolonged periods. Although .th~s •s unllkely unless you handle used oil on a daily basis It •s still advisable to thoroughly wash your hands with I

:_____ soap and wat~~~~~~ as possible after handing ~~ed oil~_j

HONDA HSS2B

OIL FILlER CAP/DIPSTICK

UPPER LEVEl

--= OIL I 5W-30 i

I ·~===="!"!·)

I ' I

I I

I -20 0 20 40 50°F

-30 -20 -10 0 10°C

DRAIN BOLT

HONDA HSB2B

HYDROSTATIC TRANSMISSION FLUID INSPECTION NOTE:

Inspect the hydrostatic transmission fluid level before starting the engine, as the hydrostatic transmission is cold.

1 J Check the hydrostatic fluid level while the outside temperature is between -10"C and 20"C (14"F and 68"F).

HS928

It should be between the "UPPER" and "LOWER" limit marks. If the fluid level is below or near the "LOWER" limit, add the recommended hydrostatic transmission fluid to the "UPPER~ limit mark.

ADDING FLUID 1) Remove the tank cap and add new hydrostatic transmission

fluid to bring the level between the "UPPER" and "LOWER" limit marks. Refer to the temperature chart for the correct level. RECOMMENDED HYDROSTATIC TRANSMISSION FLUID: HONDA HYDROSTATIC TRANSMISSION FLUID

2) Reinstall the rubber cap and tank cap securely.

CAUTION· --------------,--:------, • Take care not to let dust, dirt, or other 'foreign materials to

enter the reservoir tank. o Use only HONDA HYDROSTATIC TRANSMISSION FLUID.

SPARK PLUG 1) Clean any dirt from around the spark plug and remove the

spark plug. 2) Visually inspect the spark plug. Discard it if the insulator is

cracked or chipped: The center electrode should have square edges and the s1de electrode should not eroded.

3} Remove any deposits with a wire brush. 4) Check the plug gap With a wire-type feeler gauge and correct

the gap as necessary by bending the side electrode.

~:~~~:;EL~~E~AP Ts~~~~~;;K:~·o2s~~031in} SPARK PLUG W16EPR-U (NIPPONDENSO)

5) Make sure the sealing washer is in good condition, and with thewasherattached, thread the plug in by hand to prevent cross-threading.

6) After the spark plug ts seated, tighten with a spark plug wrench to compress the washer

7) Install the spark plug cap

NOTE

When installing a new spark plug, tighten 1/2 tur~~er th~ spark plug seats to compress the washer. When reinstalling a used spark plug, tighten 1/8- 1/4 turn after the spark plug seats to compress the washer.

CAUTION;

• The plug must be securely tightened. An improperly tightened plug can become very hot and possibly damage the engine.

• Never use a spark plug with an improper heat range.

Temp.

20"C 168"F)

10"C (50°F)

o;c 132"F)

-10°C (14"F)

SIDE

Oil level

Between upper and lower limits

LIMIT

LIMIT

(approx. 5 mm (0.20 in) above lower limit)

Between lower limit· and level when , ambient temperature is 20°C (approx. 2 mm (0.08 in)above lower limit)

Slightly below lower limit (approx. 1 mm (0.04 in) below lower limit)

Between lower limit and bottom of oil tank {approx. 4 mm (0.16 in) below lower limit}

WIRE ~t<U~,H

SEALING WASHER

HS928

TRACKS Tension Inspection Clean and thaw the tracks before checking track tension. The tracks cannot be properly checked and adjusted if clogged with snow or debris or if coated with ice.

Before checking track tension, use the height adjusting pedal to raise the auger off the ground.

1) Place the snowblower on a level surface.

2) Check track tension midway between the wheels. When correctly adjusted each track will deflect27- 33 mm (1.1 - 1.3 in.) when pressed with a force of 15 kg (331bs). Check both tracks.

When pressing the tracks, press it as shown.

I DEFLECTION ) 27 - 33 mm (1.1 - 1.3 in)

After adjustment, start the engine,and move forward and backward repeatedly, then recheck the track deflection.

Adjust both tracks equally.

Track Adjustment 1) When adjusting the track tension, be sure the snow blower is resting on the ground. Lifting it of the ground may result in incorrect crawler adjustment and damage to the adjusting bolts.

2) Loosen each lock nut, and turn each adjusting nut to obtain the correct tension; adjust right and left tracks equally. Tum each adjusting nut clockwise to increase tension, or counterclockwise to decrease tension. Retighten each lock nut.

Do not overtighten the adjusting nuts. Torque to 38 N•m (27 ft-lbs).

FUEl SEDIMENT CUP

• Gasoline is extremely flammable and is explosive under certain conditions. Do not smoke or allow flames or sparks in the area.

• After instaiUng the fuel sediment. cup, Check for leaks, and make sure the area is dry before starting the engine.

1) Set the fuel valve to '"OFF" and remove the fuersediment cup. 2) Clean dirt and water from the bottom of the fuel sediment cup

with solvent. 3) Install the 0-ring and fuel sediment cup. Tighten the cup

securely.

SHEAR BOlTS ·check shear bolts mounting auger and blower. Tighten loose bolts Replace broken bolts. P. 12-1 .

--·--

HONDA HS828

PUSH

LJM-t ~ ~--·

TRACK

TENSION BOLT

LOCKNUT

SHEAR BOLTS

FUEL VALVE

ADJUSTING NUT

FUEL SEDIMENT CUP

HONDA HSB2B

CARBURETOR

HS928

1) Start the engine and allow it to warm up to normal operating temperature.

2) Move the throttle lever SLOW position to allow the engine to idle. Turn the throttle stop screw to obtain the standard idle speed.

[Standard idle speed I 2,1 00 ±150 min-' (rpm)

3) With the engine idling, turn the pilot screw in or out to the setting that produces the highest idle rpm. The correct setting will usually be obtained at approximately the following number of turns out from the fully closed (lightly seated) position.

I Pilot screw opening I 2 turns out

NOTE:

If pilot screw adjustment greatly increases engine rpm, read­just the idle stop screw.

CHUTE GUIDE CONTROL CABLE 1) Adjust the chute guide cable by its adjusting nut (chute guide

lever side) so the chute guide is in the most raised position when the chute guide lever moves "UP" position.

2) Loosen the nuts on the chute guide lever stop (p. 3-6). 3) Lower the chute guide by the chute guide lever to the position

where clearance between chute guide and chute is 1-3 mm (0.04 - 0.12 in).

------

\\

THROTTLE STOP SCREW

CHUTE GUIDE LEVER

PILOT SCREW

CHUTE GUIDE

1- 3mm (0.04 - 0.12 in)

CHUTE

HS928

4) Position the stop against the chute guide lever, and tighten the nuts

SERVICE BULLETIN #22 =>

FUEL TANK/FUEL FILTER

• Gasoline is extremely flammable and is explosive under

I o

certain conditions. Do 'not smoke or allow flames or sparks in the area. After installing the fuel tank and filter, check for leaks, and make sure the area is dry before starting the engine.

1) Remove the fuel tank after drain the gasoline from the fuel tank completely

2) Disconnect the fuel tube and remove the fuel filter. 3) Clean the fuel tank with solvent and dry the fuel tank

completely. 4) Clean the fuel filter with compressed air and check it for

damage. 5) Place the 0-ring on the filter and reinstalL

Tighten the fuel filter to specifed torque TORQUE: 2 N·m (0.2 kg-m, 1.4 ft-lb)

DRIVE BELT 1. DRIVE CLUTCH LEVER STROKE

ADJUSTMENT 1) Depress the drive clutch lever gradually and adjust so that the

drive clutch lever stroke is 140- 143 mm (5.5 -5.6 in) at the point where the pulley starts to move.

2) To adjust the drive clutch lever, loosen the clutch cable lock nut and turn the adjusting nut.

After adjustment. tighten the lock nut securely and recheck the drive clutch lever stroke.

Start the engine, and make sure that the drive belt does not rotate when the drive clutch lever is disengaged.

HONDA HSB2B

CHUTE GUIOE LEVER

!'C'!c:===

ORIVE CLUTCH LEVER

LOCK NUT

0-RING

140 ~ 143 mm )5.5 - 5.6 inl

HONDA HSS2S

2. DRIVE BELT TENSION ADJUSTMENT 1 I Adjust the belt stoppers (P 3-1 1 I

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2) Check the distance between the drive tension roller and engine head as shown is 171 ~ 174 mm (6.7- 6.9 in) when the drive clutch lever is disengaged. To adjust the distance, loosing the drive clutch cable lock nut and turning the adjusting nut.

3) After adjustment, tighten the lock nut securely and recheck the distance.

Start the engine, and make sure that the drive belt does not rotate when the drive clutch lever is disengaged.

AUGER BELT 1. AUGER TENSION ROLLER POSITION

ADJUSTMENT 1) Adjust the auger tension roller with the long hole in the tension

arm so that the tension roller comes to the complete outside (cable side) position.

NUT

AUGER TENSION ROLLER

DRIVE CLUTCH CABLE

PULLEY

TENSION~ ~\f'r. ARM ~~

AUGER TENSION ROLLER

OUTSIDE (CABLE SIDE)

INSIDE (ENGINE SIDE)

2. AUGER CLUTCH LEVER STROKE ADJUSTMENT

1) Depress the auger clutch lever gradually and adjust so that the auger clutch lever stroke is 140-143 mm (5.5 -5.6 in) at the point where the auger tension roller starts to move. Adjustment should be made by loosening the auger clutch cable lock nut and turning the adjusting nut.

2) Start the engine and check the belt. When the auger rotates; Set the belt stopper to the standard position so that it does not contact with the belt stopper (P. 3-11 ). When the auger slips; Slide the auger tension roller to the center.

NOTE:

• Make sure that the belt rotates whenever you slide the auger tension roller to the center.

1 • When replacing the belt with a new one, it is not necessary L to slide the auger tension roller to the center.

3. AUGER CLUTCH LEVER ADJUSTMENT

To adjust the auger clutch lever affects the function of the drive clutch operating together with the auger clutch and the bell tension. Be sure to adjust as following; 1) Depress the auger clutch lever. 2) Depress the drive clutch lever. 3) Release the auger clutch lever and lock it while keeping the

drive clutch depressed. 4) Adjust the auger clutch lever so that the clearance between the

tip of the auger clutch lever and the handle grip is 10-15 mm (0.4- 0.6 in). Adjustment can be made by loosening the two cap nuts and moving the lever.

5) After the adjustment, tighten the cap nuts securely and relock the auger clutch lever. Make sure that the clearance is as specified.

4. AUGER BRAKE ADJUSTMENT

1) Start the engine and rotate the auger with the auger clutch lever depressed. Engine speed should be as below.

[Engine speed I 3,600 min-1 (rpm} ~-------~~------~~------~

2) Release the auger clutch lever and make sure that the auger stops rotating within 5 seconds.

3) If not, loosen the auger clutch cable and adjust so as to stop within 5 seconds.

NOTE:

je Be sure that the clutch lever stroke is as specified in step 2. I _ in the previous page while adjusting the auger clutch cable. ~ __ B_e_s_u_r_e_t_o_fo __ llo_w __ i_n_o_rd_e_r_o_f_s_t_e~ps __ 1_._•h_r_o~u~g_h_4_. ________ ~

H5928

140- 143 mm (5.5- 5.6 in)

HONDA HSB2B

LOCK NUT

ADJUSTING NUT

OUTSIDE (CABLE SIDE)

INSIDE (ENGINE SIDE)

10-15mm (0.4 - 0.6 in)

T

AUGER TENSION ROLLER

AUGER CLUTCH LEVER

AUGER DRIVE .

HS928

HONDA HSS2S

THROlTLE/CHOKE CABLE Adjustment of the throttle cable interlocked choke is as follows:

1. MAXIMUM ENGINE SPEED ADJUSTMENT

1) Remove the air cleaner cover, air intake cover and control cover.

NOTE: Install the 6 mm cap nut that tightening the control cover and air cleaner elbow securely after remove the control cover.

2) Loose the adjusting screw Q) and 0 to such an extent that they are not removed.

3) Start the engine, and move the throttle control lever to "FAST" position. Loose the lock nut of the throttle cable (handle side).

4) Adjust the maximum engine speed by adjusting nut as follows;

( Maximum engine speed / 3.600 ± 150 min-1 (rpm)

After adjustment tighten the lock nut securely.

5) Tighten the adjusting screw 0 to attach the control lever.

NOTE:

I Do not overtighten the screw®-

AIR CLEANER COVER

ADJUSTING SCREW (j)

ADJUSTING SCREW (j)

THROlTLE CONTROL LEVER

~ ADJUSTING SCREW (j)

= -~§i.";AST" ':\:\ }\

., .. "START (CHOKE)"

rv-- LOCK NUT

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<STANDARD IDLE SPEED> 6) Move the throttle control lever to "SLOW" position and adjust

the standard idle speed by adjusting screw CD as follow;

STANDARD IDLE SPEED: 2,100 ± 150 min-1 (rpm)

NOTE: __________________________________ __

~st the choke rod after adjusting the maximum engine

~~~------------------------------~

2. CHOKE ROD ADJUSTMENT

1) Stop the engine and loosen the adjusting screw 0 to such an extent that it is not removed.

2) Move the throttle control lever to "FAST" position. Bend the choke rod at point A in order to make the clearance between the speed control lever and choke lever 0- 5 mm {0 ~0.02 in).

HONDA HSB2B

ADJUSTING SCREW (i)

I ADJUSTING SCREW (i)

SPEED CONTROL LEVER

CHOKE ROD

HS928

HONDA HSS2B

3) Push the choke lever to the fully closed position (see directional arrow in the illustration). Move the throttle control lever to "START (CHOKE)" slowly, and stop when the speed control lever and choke lever contact.

NOTE:

Push the choke lever toward the horizontal position.

4) Turn the adjusting screw <D to contact the speed control lever. Return the adjusting screw <D to 1/8 - 1/4 turns from the contact position.

5) Make sure that carburetor choke valve is fully closed when the speed control lever is moved. If the carburetor choke valve is not fully closed, adjust the choke rod again from step 2).

6) Install the control cover, air intake cover and air cleaner cover. Start the engine, and make sure the maximum engine speed and standard idle speed are correct.

SPEED CONTROL LEVER

ADJUSTING SCREW (j)

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MAINTENANCE HONDA HSS24•HSB28

r----~~ BELT STOPPER L_ ________________________ __

1. BELT STOPPER ENGINE SIDE NOTE: I Adjust the belt stopper after adjusting the drive clutch lever

\_:_~~~-ke __ ~~n~ -~uger ~~~~e~elt ~~ns~~_:-~_ __ ___ _ _ ____ _

1) Remove the belt cover. 2)Adjust the clearance between the belt stopper/belt guide

and drive belt by loosening the bolt and nut with the drive clutch lever depressed.

CLEARANCE SPECIFICATION:

[BELT STOPPER 1-3 mm (0.04-0.12-:-in-')----j

i BELT GUIDE 3-5 mm (0.12-0.20 in)

3)Adjust the clearance between the belt stopper/belt guide and auger belt by loosening the bolt and nut with the auger clutch lever depressed.

CLEARANCE SPECIFICATION: ,-------1

1 BELT STOPPER HS624 : 4-6 mm (0.16-0.24 in) HS828 : 1-3 mm (0.04-0.12 in)

~B_~_L T G U·I·D· E HS624 : 4-6 mm (0 .16-0.24 in) _ HS828: 3-5 mm (0 .12-0.20 in) ___ , ___ _

After the adjustment, start the engine and make sure that the belts do not rotate with the clutch disengaged.

BELT GUIDE

STOPPER

ELT GUIDE

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2. AUGER SIDE

1) Remove the auger housing (P. 12-3). 2) Adjust the belt support position by loosening the nut so that,

with the auger drive belt tensioned by hand, the clearance between the belt and the right and left belt supports are as specified below.

RIGHT BELT SUPPORT: 2.0 ± 1.0 mm (0.08 ± 0.04 in) LEFT BELT SUPPORT: 4.0 ± 1.0mm (0.16 ± 0.04 in)

After the adjustment. start the engine and make sure that the belt does not rotate with the clutch disengaged.

VALVE CLEARANCE NOTE:

• Valve clearance inspection and adjustment must be performed with the engine cold.

1) Remove the cylinder head cover, and set the piston at top dead center of the compression stroke (both valves full closed}. The triangular mark on the starter pulley will align w1th the top hole on the starter cover when the piston is at top dead center of the compression or exhaust stroke.

NOTE

~---;-Mo~-~~h;--~~~~- ;arter. and make sure that triangular markl

1 ___ ~ ~-~~~~ed_~!_~~op _hoi~~~-~~~ st~~er cove~---~-'

2) Insert a feeler gauge between the rocker arm and valve to measure valve clearance.

IN 0.15 ± 0.02 mm l V-A-LV-·E·--C-l_E_A_R __ A_N_C_E _ __t_f-_--~--~-.Lf-.'-'-~:-~~

0

0-=0

::_:::6

::_±-~±=:o_. ~'-'~-=o-=:"1

m...:i:cn I'- _,1 _ EX (0.008 ± 0.001 in)

3) If adjustment is necessary, proceed as follows: a. Holding the rocker arm pivot and loosen the pivot lock nut. b Turn the rocker arm pivot to obtain the specified clearance. c. Tighten the lock nut to the specified torque while holding

the rocker arm pivot. TORQUE: 10 N·m (1.0 kg-m, 7 ft-lb)

d. Recheck valve clearance after tightening the lock nut

LEFT BELT SUPPORT

HONDA HSBeB

ROCKER ARM

RIGHT BELT SUPPORT

ROCKER ARM PIVOT

ROCKER ARM PIVOT LOCK NUT

To increase valve clearance, screw out. To decrease valve clearance, screw in.

HS928

HONDA HBB2B ENGINE REMOVAL/INSTALlATION 1. ENGINE REMOVAL/INSTALLATION

ENGINE REMOVAL/INSTALLATION 1) Remove the 6 x 12 mm flange bolt, collars and belt cover. 2) Remove the chute guide cable from the chute guide. 3) Remove the 8 x 28 mm flange bolt, 8 mm washer, drive pulley (drive and auger) and woodruff key.

NOTE:

! Be careful not to lose the woodruff key.

4) Remove the 6 x 12 mm flange bolt from the chute handle.

NOTE:

Engine can be removed without removing the chute handle holder and chute drive gear.

5) Disconnect the engine switch wire and ground cable. 6) Disconnect the throttle cable from the control plate. 7) Remove the four 10 mm flange nuts, and remove the engine.

GROUND CABLE

10 mm FLANGE NUT

HANDLE HOLDER---',-y BOLT

6 X 12

TH CABLE

ENGINE SWITCH

I ADJUSTMENT; P. 3-9)

--------

WOODRUFF KEY

AND AUGER BELTS

8 X 28

CHUTE GUIDE CABLE

)ADJUST8MENT: P. ~

I I

• •

HS928

FUEL SYSTEM HONDA HSB2B

1. AIR CLEANER 3. FUEL TANK/GOVERNOR 2. CARBURETOR

AIR CLEANER a. DISASSEMBLY /REASSEMBLY • Air cleaner disassembly/reassembly can be made with the engine installed in the frame .

BREATHER TUBE IREASSEM_B_LY-:------~

I Aft.er installing on the air cleaner elbow, insert into the hole in the 1~9YI~n~:_!~~~ cover. ____ __j

6 X 35

CARBURETOR SPACER

REASSEMBLY: Check for damage and install. Note the installation direction.

VIEW FROM THE AIR CLEANER SIDE

CLEANER CAP

f""f-------- 6 x 8 mm

6 CAP NUT (2}

PAN SCREW

6 X 8 (21

AIR INTAKE COVER

REASSEMBLY: Install as shown.

AIR INTAKE COVER

GROMMEN~ PROTECTING

~t==;) TUBE

THROTTLE LEVER CARBURETOR SIDE SIDE

AIR CLEANER ELBOW

DISASSEMBLY /REASSEMBLY: • Remove and install with the choke lever and

fuel valve in the ""ON'' position. • Clean the inside of the elbow with com­

pressed air before installation.

HONDA HSB2B

CARBURETOR SERVICE BULLETIN #10 =>

a. REMOVAL/INSTALLATION

1) Remove the air cleaner elbow (P. 5-2)

HS928

THROTTLE RETURN SPRING

REASSEMBLY: • Pass the throttle return spring

through the governor rod and hook it with its end to small hole of the carburetor throttle arm.

• Short, straight end goes toward the carburetor side

FUEL TUBE

INSULATOR PACKING

CHOKE ROD

FUEL VALVE

CARBURETOR PACKING

INSPECTION: P 5-3 DISASSEMBLY:

CARBURETOR INSULATOR

REASSEMBLY: • Blow out the passages with compressed air

(30 psi or less) and install, noting the installation direction.

• After installation, connect the spark plug wire and fuel tube securely.

HIGH CORD

Unhook the thronle return spring. Pull the carburetor forward to a point where the groove in the throttle arm lines up with the governor rod. and lift the governor rod out of its hole. Reassembly is in the reverse order of disassembly.

GROOVE

THROTTLE

HS928

HONDA HSS28

b. DISASSEMBLY /REASSEMBLY

Remove the drain bolt and drain the carburetor before disassembling. Fuel vapor or spilled fuel may ignite.

NOTE • Clean the outside of the carburetor before disassembly.

PILOT JET

REASSEMBLY:

THROTTLE STOP SCREW

I ADJUSTMENT: p 3-5 I

• Clean thoroughly with compressed air before installation.

• Lightly lubricate the 0-ring to ensure easy installation into the carburetor body.

MAIN JET

'«/ i

REASSEMBLY: ------.....· Clean thoroughly with compressed air before installation.

MAIN JET NUMBER: #92

FLOAT

REASSEMBLY: Check for smooth movement after installation.

c. INSPECTION

• FLOAT LEVEL HEIGHT

Place the carburetor as shown and measure the distance between the float top and carburetor body when the float just contacts the seat without compressing the valve spring.

TOOL: FLOAT LEVEL GAUGE 07401-0010000

/ Standard float height 13.7 mm (0.54 in)

If the height is out of specification, replace the float and/or the float valve. Recheck the float height.

CARBURETOR BODY

REASSEMBLY:

Is T"8oL) FLOAT LEVEL GAUGE 07401-0010000

~ 0-RING

HS928

HONDA HSS2S

FUEL TANK/GOVERNOR SERVICE BULLETIN #22 => a. DISASSEMBLY /REASSEMBLY

• Before disassembly, drain the tank and fuel line completely. • Fuel vapor or spilled fuel may ignite.

NOTE:

I Adjust the adjusting scre~s of the throttle lever interlocked choke, after reassembling the control linkage_ (P. 3-9).

• Fuel tank/governor disassembly/reassembly can be made with the engine installed in the frame. Before disassembly, perform the following:

1) Drain the fuel. 2) Remove the air cleaner (P. 5-1}. 1=111=1 TANK CAP

FUEL FILTER

2.0 N-m (0.20 kg-m, 1.4 ft-lb) REASSEMBLY: Check to be sure the filter is clean and

5x20mm

PAN S~CREW (31 mm

RING ASHE

6x12

RUBBER

CHOKE ROD

5 x 10 mm FLAT SCREW (2)

FUEL TANK

FUEL TANK CAPACITY: 6.0 lit (1.585 US gal, 1.320 Imp gal) REASSEMBLY:

the tank interior with solvent to sediment and dry it throughly

IIi

I II'VI ~g~Tl FLANGE ~ I befo~e installing. Replace if neces-

~~ _ NUT~ ___ sarv~-------------------~ I >.:;._ --··------------·-

~GOVERNOR ARM

GOVERNOR ROD

THROTTLE RETURN SPRING

HANDLE BRACKET HOLDER

8 mm FLANGE NUT (2)

~ m (2.4 kg-m, 17 ft-lb)

. m (2.4 kg-m. 17

•

HS928

RECOIL STARTER/FAN/MUFFLER

~. RECOIL STARTER/FAN COVER 2. MUFFLER

RECOIL STARTER/FAN COVER a. REMOVAL/INSTALLATION

• Wear gloves and eye protection. • During disassembly, take care not to allow return spring to come out.

• Recoil starter/fan cover removal/installation can be made w1th the eng1ne installed in the frame

Before disassembly, perform the following: 1) Remove the AC starter switch housing (P. 18-1 ).

b. DISASSEMBLY

STARTER ROPE

REASSEMBLY: Check the rope for fraying or wear before installation If installing a new rope, oil the rope before installation

STARTER CASE

FAN COVER

RETURN SPRING ~---------- --- --·-----=-1· :CAUTION: 'Wear gloves to protect your hands. REASSEMBLY: Hook the outer hook m the groove of the starter reel and inner hook on the starter case tab.

STARTER REEL

RECOIL STARTER

lREASSEMBLY: I R~move dirt and debris before installation. Position the recoil starter case fo. r best j starter grip location. -····· __

"'!illJ 6 X 8 (2)

()

RATCHET --------------, REASSEMBLY: REASSEMBLY:

case alter 1 1 Check for wear or damage. Install instal

Note the installation direction

RATCHET

~ STARTER REEL

SPRING COVER BOLT ,.:, REASSEMBLY:

~ @OIIJ ~ Apply a locking agent to the '1

I ~a~~ threads. ____j

\~FRICTION PLATE B

STARTER REEL COVER FRICTION ~------ ·-PLATE A REASSEMBLY:

Align the ratchet with the reel cover notch.

c. REASSEMBLY

• RECOIL STARTER ASSEMBLY

The recoil rope must be oiled prior to installation to prevent freezing, which may make the recoil starter inoperative

1) Cut 137 em (54 in) of #5 recoil rope from your bulk supply.

2) Soak the recoil rope in engine oil.

3) Use a shop towel and squeeze the excess oil from the rope.

4) Pass the rope through the hole in the starter reel, and tie the end of the rope. Next, wind the rope onto the reel in the indicated direction, and wedge the end of the rope in the notch on the edge of the reel.

5) Insert the hook on the outer side of the spring into the hole <A> in the spring case. wind to the right, and attach the hook on the spring's inner end on the groove <B> inside the starter

case

6) Install the starter reel assembly into the starter case. Take care so that the hook on the inner side of the spring does not come off. (It is advrsable to rnsert while turning to the left.)

HS928

E OIL

.. THOROUGHLY

NOTCH

RETURN SPRING

----"".,"""'--STARTER CASE

ROPE

EL

----

7) Install the guide plate, ratchet shaft and ratchet on the starter

reel. Install the friction plate A and friction spnng. Grease the starter with low temperature grease. Align the groove of the starter reel cover with the ratchet, and

secure with friction plate B and the starter reel cover bolt.

8) With a length of rope extendmg from starter reel notch, rotate reel 3 full turns in dtrection of the arrow. Hold reel and pull end of rope out of case and attach a spring scale on to the end of the rope. Check that the load on the rope is 0.6- 1.4 kg (1.3- 3 0 lb)

9) Feed the rope through starter grip and tie knot. Pull the starter rope several times, and check that the ratchet is

operating properly.

HS928

STARTER REEL COVER BOLT

FRICTION • PLATE B --STARTER REEL COVER FRICTION SPRING

FRICTIO PLATE A

GROOVE I .,.___......-RATCHET

-------

HONDA HSS2S

MUFFlER a. DISASSEMBLY /REASSEMBLY

B mm FLANGE NUT (2)

24 N m (2.4 kg-m. 17 lt-lb)

'"" i

\ ,/ 0

.

-''

)~ \___\

EXHAUST PIPE GASKET

( Do not reuse.

\ '

LEFT MUFFlER PROTECTOR

MUFFLER -----·--------, REASSEMBlY: Install after removing the carbon deposits from the muffler using a plastic hammer.

MUFFLER

B mm FLANGE NUT (2)

[ 24 N.m (2.4 kg-m. 17 ft-lb)

---------

HS928

MUFFLER ASSEMBLY

/ip. - "'-'~' 't ~ 1/-, '/lit·---=-- .) -.....____

(.·I ~-/ill_ ,__J_ ,-_ ·.-- it;;:! 1\'----- . ---0; ~~- (1 ~./ \ e--ll "llil(c' -·r-/l.~ \)!}; /

, _:~ r-)

5 x Bmm PAN SCREW (2)

( RIGHT MUFFLER PROTECTOR

MUFFLER GASKET

Do not reuse.

EXHAUST PIPE

REASSEMBLY:

---

B mm FLANGE-----­NUT(3)

Install aher removing the carbon deposits from the exhaust pipe by lightly tapping it with plastic ham- : mer. I

EXHAUST PIPE GASKET

~Do not reuse. :==J

•

•

---~

HS928

FL YWHEEUIGNITION COil 1. FLYWHEEL/IGNITION COIL

FlYWHEEL/IGNITION COIL a. DISASSEMBLY /REASSEMBLY

HONDA HSS2S

• Flywheel/ignition coil disassembly/reassembly can be made w1th the engine installed in the frame. Before disassembly, perlorm the following:

1) Remove the fuel tank/governor (P. 5A). 2) Remove the AC starter switch (P. 18-1 ). 3) Remove the fan cover (P. 6-1 ).

BLACK WIRE

REASSEMBLY: Install the black wire with two clamps to the cylinder barrel.

WOODRUFF KEY (25 x 18)

REASSEMBlY: After reinstalling the flywheel, check to be sure that the woodruff key is still in its slot on the crankshaft.

HIGH TENSION CORD

REASSEMBLY: Check for frayed insulation or other defects.

6 X 25 (2)

TRANSISTORIZED IGNITION COil

jtNSPECTION/ADJUSTMENT: P. 7-2

CODliNG FAN

CAUTION: When disassembling and reassembl­ing. take care not to damage the fan blades. REASSEMBLY: Attach by aligmng the four lugs on the rear side of the fan with the small holes in the flywheel.

FLYWHEEL

DISASSEMBLY: • Do not hit the flywheel with a

hammer. Remove with a commercially avaliable flywheel puller~

• Avoid the magnet section when attaching the puller.

FLYWHEEL PULLER (COMMERCIALLY

AVAILABLE) .

REASSEMBLY: II

• Make certain there are no metal objects stuck to the magnets.

• Adjust the ignition coil air gap after reassembly (P. 7 -2).

16 mm SPECIAl NUT

TORQUE: 113 N-m (11.3 kg-m. 82 ft~lb) DISASSEMBlY/REASSEMBlY: • Apply oil to the thread. • Hold the flywheel by placing

screwdriver into the pulley.

STARTER PULLEY

REASSEMBLY: Attach by aligning the lug {A) on the pulley with the small hole (B) at the center of the flywheel.

~ tBI IAI

HONDA HSS2S

b. INSPECTION • IGNITION COIL NOTE·

• Ignition coil can inspect without removing.

HS928

• If remove the ignition coil, adjust the air gap between ignition coil and flywheel.

• Use the specified tester listed below. - Tester manufactured by Kowa (TH - 5H) -Tester manufactured by Sanwa (SP -lOD) Set the measured range as follows: - Sanwa tester: K 0 range - Kowa tester: R x 100 0 range (When using the Kowa multitester, remember that at\ readings should be multiplied by 1 00).

<Primart side> Measure the resistance of the primary coil by anaching one ohmmeter lead to the ignition coil's primary lead wire while touching the other test lead to the iron core.

I PRIMARY SIDE RESISTANCE I o.7- o.9n ~

<Secondary side>

Measure the resistance of the secondary side of the coil by removing the spark plug cap and holding the test leads to the high tension cord and iron core.

[ SECONDARY SIDE RESISTANCE 6.3- 7.7k!l

NOTE

• A false reading will result if the spark plug cap is not removed.

• SPARK PLUG CAP

Measure the resistance of the spark plug cap by touching one test lead at the wire end of the cap, and the other at the spark plug end.

~esistance 7.5- 12.5k!l

Replace the spark plug cap if the resistance is not within the range specified.

c. ADJUSTMENT

• IGNITION COIL AIR GAP Adjustment is required only when the ignition coil or the flywheel has been removed. 1) Loosen the transistor unit bolts. 2) Insert a long thickness gauge or a piece of paper of the proper

thickness between the ignition coil and the flywheel. Both gaps should be adjusted simultaneously.

3) Push the ignition coil firmly toward the flywheel and tighten the bolts.

[Specifledcle~r;;-nc~3 0.4 ± 0.2 mm (O.o-i6±0-:0oai.;-1··1 NOTE:

Avoid the magnet part of the flywheel when adjusting.

PRIMARY SIDE LEAD WIRE

IRON CORE

SECONDARY SIDE

HIGH TENSION CORD

IGNITION COIL

E7J Q

CAP

TRANSISTORIZED IGNITION COIL

\._

FLYWHEEL

-

CYLINDER HEAD/VALVES 1. CYLINDER HEAD/VALVES

CYLINDER HEAD/VALVES a. DISASSEMBLY /REASSEMBLY

NOTE:

[ Adjust the valve clearance alter reassembly {P. 3-12).

HS928

HONDA HSB2B

• Cylinder head disassembly/reassembly can be made with the engine installed in the frame. Before disassembly, perform the following:

1) Remove the air cleaner (P. 5-1). 2) Drain the fuel and remove the carburetor and fuel tank/governor {P. 5-2 and 5-4).

10 TORQUE: 35 N·m {3.5 kg-m, 25 ft-lb) REMOVAL/INSTALLATION: Loosen and tighten the bolts in a crisscross pattern in 2-3

CYLINDER HEAD COVER BOLT

WASHER

CYLINDER HEAD

REASSEMBLY: Install the gasket on the cylinder head cover as shown.

CYLINDER HEAD COVER ~

CYLINDER HEAD REMOVAL/INSTALLATION: • Before installation, remove any

carbon deposits from the com­bustion chamber and inspect the valve seats.

• Measure the cylinder compre­ssion after reassembly.

DISASSEMBLY/REASSEMBLY: P. 8-2

_...--SHROUD CYLINDER

---·--- ----... ---

HS928

HONDA HSS2S

• CYLINDER HEAD

VALVE ROTATOR (Exhaust valve only)

CAUTION: If the valve rotator is not installed, the ex­haust valve may drop into the cylinder when starting the engine.

M

ROCKER ARM PIVOT LOCK NUT (2)

VALVE SPRING RETAINER_t2L__ DISASSEMBLY: Push down and slide the retainer to the side, so the valve stem slips through the hole at the side of the retainer. REASSEMBLY: The exhaust valve retainer has a larger center recess than the iniake valve retainer, so it can accept the valve rotator.

~ CAUTION Do not remove the valve spring retainers while the cylinder head is installed, or the valves will drop into the cylinder.

ROCKER ARM PIVOT BOLT (2)

/10 N•m (1.0 kg-m. 7 ft-lbl/ 124 N•m (2.4 kg-m. 17 ft·lb) I

ROCKER ARM (2)

REASSEMBLY: Before installing, check for wear on the surfaces which contact the pivot bolt, the push rod and the rocker arm pivot.

--------~·---

EXHAUST VALVE

REASSEMBL' Before installation, re­move carbon deposits and inspect the valve. INSPECTION: P. 8-3

REASSEMBLY: Do not interchange with the exhaust valve. VALVE HEAO OIMETER IN : 30 mm ( 1 . 18 in) EX: 26 mm (1.02 in) INSPECTION: P. 8-3

CYLINDER HEAD INSPECTION: P. 8-3

PUSH ROO (2) REASSEMBLY: Check both ends for wear and check the rod for straightness. Be sure the rod ends are firmly seated in the lifters.

b. INSPECTION • VALVE FACE/STEM O.D. Inspect each valve face for pitting or wear irregulaties. Inspect each valve for face irregularities, bending or abnormal stem wear. Replace the valve if necessary. Measure and record each valve stem O.D

I

~ STANDARD

IN 6.59 mm 10.259 in)

EX i 6.55 mm 10.258 1n)

• VALVE GUIDE I. D.

NOTE

SERVICE LIMIT

6.44 mm 10.254 in)

640 mm 10.;152_1'1) _

• Ream the valve guides to remove any carbon deposits before measuring

Measure and record each valve guide 1.0.

~ STANDARD SERVICE LIMIT

IN 6.60 mm 10.260 1n) 6.66 mm 10.262 in)

EX 6.60 mm 10.260 in) 6.66 mm 10.262 in)

Replace the guides if they are over the service limit.

• STEAM-TO-GUIDE CLEARANCE Subtract each valve stem 0.0. from the corresponding guide 1.0. to obtain the stem-to-guide clearance

~ STANDARD SERVICE LIMIT

IN 0.01 0.037 mm

10.0004 - 0.0015 in) 0.1 0 mm (0.004 in)

EX 0.05 0077 mm

10 0020- 0.0030 in) 0.12 mm (0.005 in)

lf the stem-to-guide clearance exceeds the service limit. determine if the new guide with standard dimensionS would bring the clearance within tolerance. If so, replace any guide as necessary and ream to fit. If the stem-to-guide clearance exceeds the service limit with new guides, replace the valves as well.

NOTE:

• Recondition the valve seats whenever the valve guides are replaced.

• VALVE SPRING FREE PLAY Measure the free length of the valve springs.

~ STANDARD SERVICE LIMIT

IN 39.0 mm 11.54 in) 37.5 mm 11.48 in)

EX 39.0 mm 11.54 in) 37 5 mm 11.48 in)

Replace the springs if they are shorter 1han the service limit.

• VALVE SEAT WIDTH Measure the valve seat width

~ STANDARD

IN 0.8 mm 10.03 in)

EX 0.8 mm (0.03 in)

SERVICE LIMIT

2.0 mm 10.08 in)

2.0 mm (0.08 in) ·-

If the valve seat width is under the standard. or over the service 11mit, recondition the valve seat (P. 8-6).

HS928

VALVE FACE

HONDA HSB2S

«: 0.8 mm (0.03 in)

HS928

HONDA HSB2B

• CYLINDER HEAD

Remove carbon deposits from the combustion chamber. Clean off any gasket material from the cylinder head surface. Check the spark plug hole and valve areas for cracks. Check the cylinder head for warpage with a straight edge and a feeler gauge.

Service limit 0.10 mm (0.004 in)

FEELER GAUGE

c. VALVE GUIDE REPLACEMENT

1) Chill the replacement valve guides in the freezer section of a refrigerator for about an hour

2) Use a hot plate or oven to heat the cylinder head evenly to

150'C i300'F) Check the temperature with a temperature indicating stick (available at welding supply stores) or equivalent.

To avoid burns, use heavy gloves when handling the heated

cylinder head. ·------------ ·--·-----

CAUTION:

• Do not use a torch to heat the cylinder head; warpage of the cylinder head may result.

• Do not get the head hotter than 150°C (300°F); excessive heat may loosen the valve seats.

3) Remove the heated cylinder head from hot plate and support it with wooden blocks. Drive the valve guides out of the head from the combustion chamber side.

TOOL: VALVE GUIDE DRIVER, 6.6 mm 07942-6570100

CAUTION:

When driving the valve guides out, be careful not to damage the head.

4) Remove the new valve guides from the refrigerator one at a time as needed.

5) Install the new valve guides from the valve spring side of the cylinder head. Drive each valve guide to the specified height (measured from the top of the valve guide to the cylinder casting as shown).

6) After installation, inspect the valve guide for damage. Replace the guide if damaged.

IN 3.0 mm (0.12 in)

EX 3.0 mm (0.12 in)

• VALVE GUIDE REAMING

NOTE~·---------~--------~--~~~------, ~ best results, be sure the cylinder head is at room

~-- t~mper~~--~~-fore ream!::~~-e gu_•_d_e_s ________ ~

1) Coat the reamer and valve guide with cutting oil. 2) Rotate the reamer clockwise through the valve gu1de the full

length of the reamer. 3) Continue to rotate the reamer clockwise while removing it from

the valve guide.

TOOL:

HS928

VALVE GUIDE REAMER, 6.6 mm 07984-ZE2000D, OR 07984-ZE2000C

HONDA. HSB2B

Is -;;;OL I VALVE GUIDE DRIVER, 6.6 mm 07942-6570100 ----.....

Is -;;;OL I VALVE GUIDE REAMER, 6.6 mm 07984-ZE2000D, OR 07984-ZE2000C

HS928

HONDA HSB2B

4) Thoroughly clean the cylinder head to remove any cutting residue.

5) Check the valve guide bore; it should be straight, round and centered in the valve guide. Insert the valve and check operation. If the valve does not operate smoothly, the guide may have been bent during installation. Replace the valve guide if it is bent or damaged.

6) Check the valve guide-to-stem clearance (P_ 8-3).

d. VALVE SEAT RECONDITIONING

1) Thoroughly clean the combustion chamber and valve seats to remove carbon deposits. Apply a light coat of Prussian Blue or erasable felt-tipped marker ink to the valve faces.

2) Insert the valves, and then lift them and snap them closed against their seats several times. Be sure the valve does not rotate on the seat. The transferred marking compound will show any area of the seat that is not concentric.

NOTE:

• Follow the instructions of the valve seat cutter manu­facturer.

3) Using a 45° cutter, remove enough material to produce a smooth and concentric seat. Turn the cutter clockwise, never counterclockwise. Continue to turn the cutter as you lift it from the valve seat.

@ @

~ ~ 0 X

;~~'" ..

Is ~OL I SOLID PILOT BARS · 6.60 mm ona1-P02010A

6.62 mm ona1-P00202A 6.65 mm 07781-P02030A T·WRENCH, #505 ona2-P01010A T·WRENCH ADAP10R, #503-1 07782-POl 020A ACCESSORY PACKAGE, #246 ona2-Po1 030A VALVE SEAT CUTTERS

~ #114 ~~60' 30'

#128 45'

07780-?01 020A

07780-POl 01 OB

4) Use the 30° - 32° and 60° cutters to narrow and adJust the valve seat so that it contacts the middle of the valve face. The 30°- 32° cutter removes material from the top edge. The 60° cutter removes material from the bottom edge. Be sure that the Width of the finished valve seat is within specification.

• VALVE SEAT WIDTH

STANDARD SERVICE LIMIT

0.8 mm (0 03 in) 2.0 mm (0.08 in)

5) Make a light pass with 45° cutter to remove any possible burrs at the edges of the seat.

6) After resurfacing the seats, inspect for even valve seating. Apply Prussian Blue compound or erasable felt-tipped marker ink to the valve faces. Insert the valves, and then lift them and snap them closed against their seats several times. Be sure the valve does not rotate on the seat The seating surface, as shown by the transferred marking compound, should have good contact all the way around.

7) Lap the valves into their seats, using a hand valve tapper and lapping compound (commercially available).

CAUTION:

To avoid severe engine damage, be sure to remove all lapping compound from the engine before reassembly. 1

NOTE ~ --------------------·

Check valve clearance after reassembly.

HS928

HONDA HSB2B

CONTACT TOO HIGH

~~ CONTACT TOO LOW

'T·~

O.Smm (0.03 in)

]';VALVE LAPPER

---------

HONDA HSB2B

HS928

------

CYLINDER/CRANKCASE I 1. CYLINDER/CRANKCASE I CYLINDER/CRANKCASE a. DISASSEMBLY /REASSEMBLY

OIL FILLER CAP/ -------. DIPSTICK

8 X 36 (7)

6206 BALL BEARING

REASSEMBLY: Drive the bearing into the crankshaft cover with the marking facing up, using the special tools.

[s.roaL) DRIVER 07749-0010000

ATIACHMENT, 62 x 68 mm 07746-0010500 PILOT, 30 mm

07746-0040700

....... (0)-. OIL SEAL (30 x 46 x 8)

REASSEMBLY: Be careful not to damage the lip of the oil seal when installing the crankcase cover on the crank· case.

[ 24 N-m (2.4 kg-m, 17 ft-lb)

•

•

PISTON

DISASSEMBLY, INSPECTION: P 10-1 REASSEMBLY: Install so that the triangular mark on the piston head points downwards (push rod side). ~ =

0

TRIANGULAR MARK

-«MI

HS928

HONDA HSB2B

~ VALVE LIFTER (2)

DISASSEMBLY: Tilt the engine forward to prevent the lifters from falling out until the

i camshaft is installed.

I OIL SEAL 130 X 46 X 8)

~~~~~

OIL DRAIN BOLT _ .. ----23 N-m (2.3 kg-m, 17 ft-lb)

CONNECTING ROD BDLT(2)

j24 N-m (2.4 kg-m, 17 ft-lb) j

CONNECTING ROD CAP

REASSEMBLY: Install the connecting rod cap as the dip part facing crankcase cover side.

CRANKSHAFT

REASSEMBLY: • Install by pressing in firmly until

contact is made with the bearing surface.

• Take care not to damage the oil seal.

• Take care not to damage the gear on the governor weight. Rotate the shait while pushing it in

6206 BALL BEARING

I REASSEMBLY: I p 10-3

~j~

MECHANICAL DECOMPRESSOR

REASSEMBLY: Before installing, inspect for worn and weakened springs and check that the decompressor weight is moving smoothly.

CAMSHAFT

INSPECTION: P. 10-6 REASSEMBLY: With the crankshaft in place, align the timing punch mark on the cam gear with the punch mark on the crankshaft's cam drive gear.

HONDA HSB2B

GOVERNOR ARM SHAFT

HS928

LOCK PIN

REASSEMBLY: • Install the lock pin immediately

after installing the governor arm shaft. and move the shaft over against the governor slider.

• The lock pin must be installed with the straight side of the pin against the groove in the shaft.

REASSEMBLY:

CAP

REASSEMBLY: Insert firmly into the shaft groove.

GOVERNOR WEIGHT (2)

REASSEMBLY: Check that the GOVERNOR WEIGHT HOLDER weights move free-ly REASSEMBLY:

Check that the gear for wear or damage before installing.

SHAFT GROOVE

WASHER

GOVERNOR SLIDER

REASSEMBLY: Spread the governor weights to in­stall the slider, then check to be sure the slider moves smoothly.

WASHER

GOVERNOR WEIGHT PIN (2)

•

•

HS928

PISTON/CRANKSHAFT /CAMSHAFT

1. PISTON 2. CRANKSHAFT L

PISTON a. DISASSEMBLY /REASSEMBLY

PISTON RING

REASSEMBLY: • Install all rings with the marking facing upward. • Be sure that the top and second rings are not

interchanged. • Check that the rings rotate smoothly after installation. • Spece the p1ston ring end gaps 120 degrees apart, and

do not al1gn the gaps with the piston pin bore.

-----:o TOP RING (CHROME PLATED)

~=~==n SECOND RING

PISTON PIN CLIP (2)

REASSEMBLY:

OIL RING (3-PIECE RING)

• Install by setting one end of the clip in the piston groove, holding the other end with long-nosed pliers, and rotating the clip ln.

• Do not align the end gap of the clip with the cut-out in the piston pin bore.

3. CAMSHAFT

CONNECTING ROD

REASSEMBLY: Install the connecting rod with the long end toward the triangle marked side of the piston.

HONDA HSS2B

TOP RING

PISTON

HS928

HONDA HSB2B

b. INSPECTION

• PISTON SKIRT O.D.

Measure and record the piston 0.0. at a point 10 mm (0.4 in) from the bottom of the skirt and 90° to the piston pin bore

STANDARD SERVICE LIMIT

72.74 mm {2.864 in) 72.62 mm {2.859 on)

• PISTON-TO-CYLINDER CLEARANCE

--STANDARD SERVICE LIMIT

0.26-0.307 mm 0.55 mm {0.022 in)

{0.0102- 0.0121 in)

• PISTON RING SIDE CLEARANCE

STANDARD

0 015 - 0.045 mm (0.0006- 0.0018 in)

• PISTON RING END GAP

STANDARD

Top/ 0.2 -0.4mm 2nd/oil (0.01 - 0.02 in)

NOTE:

SERVICE LIMIT

0.15 mm {0.006 in)

SERVICE LIMIT

1.0 mm (004 in)

• Use the top of the piston to position the ring horizontally in the cylinder.

• PISTON PIN O.D.

STANDARD

18.00 mm {0.709 in)

~--­----

SERVICE LIMIT

17.954 mm {0.707 in)

10 mm (0.4)

MICROMETER

0

HS928

• PISTON PIN BORE I. D.

STANDARD SERVICE LIMIT

18.002 mm (0.7087 in) 18.048 mm (0 7105 in)

o PISTON PIN-TO-PIN BORE CLEARANCE

STANDARD

0.002- 0.014 mm (0.0001 - 0.0006 in)

SERVICE LIMIT

0.08 mm (0 003 in)

o CONNECTING ROO SMALL END I. D.

E STANDARD SERVICE LIMI:c.T ___ _

_ 18 005 mm (0.708•:9-'m'.'>)'____L _ __'1_-:8:::.0-.:7..'m".m~(O':'C.C'.7C.1 c_1 .:c'nc_) __

o CYLINDER BORE I. D.

Measure and record the cylinder LD_ at three levels in both an X andY axis. Take the maximum reading to determine the cylinder wear. -------------.-----------,

SERVICE LIMIT STANDARD

73.00 mm (2.874 in) 73.17 mm (2.881 in)

CRANKSHAFT CRANKSHAFT BEARING (6206)

REASSEMBLY:

1) Coat the inner bearing with oil and press the bearing onto the crankshaft using the special tools.

TOOLS: DRIVER, 40 mm I.D. ATTACHMENT. 30 mm I.D.

07746-0030100

07746-0030300

( s TOOL I DRIVER. 40 mm I.D. 07746-{)0301 00

( s -;-;;OL I

HONDA HSB2B

A IT AC H ME NT, __ _::;,;t.,.o~ 30 mm I. D. 07746-0030300

HS928

HONDA HSB2B

CRANKSHAFT GEAR DISASSEMBLY /REASSEMBLY

DISASSEMBLY Mark a line on the crankshaft, the timing gear, and the governor drive gear. Set the bearing separator (commercially available) on the bottom of the governor drive gear or timing gear. Press out the gears from the crankshaft

REASSEMBLY 1) GOVERNOR DRIVE GEAR

Using the old governor drive gear for reference, mark a line at the same position on the new governor drive gear. Using the special tools, press in the gvernor drive gear, so that its mark lines up with the mark on the crankshaft.

TOOLS: DRIVER, 40mm I. D. ATTACHMENT, 35 mm I. D.

07746-0030100 07746-0030400

2) TIMING GEAR Using the old timing gear for reference, mark a line at the same position on the new timing gear. Using the special tools, press in the timing gear, so that its mark lines up with the mark on the crankshaft.

TOOLS: DRIVER. 40 mm I. D. ATTACHMENT, 30 mm I.D.

a. INSPECTION

STANDARD

0.1-0.7mm (0.004- 0.028 in)

07746-0030100 07746-0030300

SERVICE LIMIT

1.1 mm {0.04 in)

BEARING SEPERATOR (COMMERCIALLY

AVAILABLE)

Is ;-;;OL I DRIVER, 40 mm I. D. 07746-0030100

Is ;-;;OL I ATTACHMENT. 35 mm I.D. 0746·0030400

Is ;-;;OL I DRIVER, 40 mm I. D. 07746-0030100

[ s -;;;OL I ATTACHMENT 30 mm I. D. 07746-0030300

HS928

HONDA t-19828

CAMSHAFT o CAMSHAFT CAM lOBE HEIGHT

~ STANDARD SERVICE LIMIT

IN 31.2 mm (1.23 in) 30.95 mm (1.219 in)

EX 31.1 mm (1.22 in) 30.85 mm (1.215 1n)

o CAMSHAFT 0.0.

STANDARD SERVICE LIMIT

15.984 mm (0.6293 in) 15.920 mm (0.6268 in)

• • CAMSHAFT HOLDER I. D.

STANDARD SERVICE LIMIT

16.00 mm (0.630 in) 16.05 mm (0.632 in(

-----·-

-

CHUTE 1. CHUTE

CHUTE a. DISASSEMBLY /REASSEMBLY

CHUTE UPPER HANDLE

CHUTE HANDLE BUSH

8 mm FLANGE NUT

c

H$928

HONDA HSB28

CHUTE GUIDE COLLAR (2)

REASSEMBLY: Install the chute guide collar between the chute and chute guide as shown.

CHUTE-­

COLLAR

d-o----6 X 14 (2)

X 12 (3)

ACCEL PEDAL WASHER {RESINOID)

6 mm CAP NUT(2)

CHUTE SETTING a, ____ PLATE (3)

SPRING PIN

CHUTE SETTING 14 x 28

mm)(4 )

WASHER (3) DISASSEMBLY: Drive the spring pin out using the pin punch.

(COMMERCIALLY AVAILABLE)

PIN PUNCH ~--<-J.~ 5132 "

CHUTE DRIVE GEAR

REASSEMBLY I ADJUSTMENT: P. 11-2.

GEAR STAY

WASHER

c LOWER HANDLE 8 mm PLAIN WASHER (2)

8 mm FLANGE NUT

H$928

HONDA HSB2B

CHUTE GEAR INSTALLATION

Install the chute drive gear to the chute driven gear. Make sure that backlash between the chute drive gear and driven gear is as follows.

BACKLASH: 0.5 - 1.0 mm (0.02- 0.04 in)

CHUTE DRIVE GEAR

0.5-1.0 mm (0.02- 0.04 in)

: AROUND THE CHUTE DRIVE AND DRIVEN GEARS •

HS928

AUGER/AUGER TRANSMISSION HONDA HSB2S

1. AUGER 3. AUGER HOUSING 2. AUGER TRANSMISSION

AUGER SERVICE BULLETIN #8 =>

a. DISASSEMBLY/REASSEMBLY

NOTE:

L Do not r_:y_~~~~~~-~eft a~~right au~e~- ---··-·------- _________________ __j

SHEAR BOLT. NUT

REASSEMBLY: The shear bolt is a step bolt. Note its direelion when assembling the auger.

NUT oiQ).

SHAFT_::{ )

BLOWER ~

SHEAR BOLT-------i

'""~ AUGER TRANSMISSION

DISASSEMBLY /REASSEMBLY: P. 1 2·2

RIGHT AUGER

8mm WHEEL PIN {2)

NUT {2)

WASHER{2)

CO TIER PIN {2)

1,..;/'1---BLOWER

SHEAR BOLT

AUGER

REASSEMBLY: Insert the 6 x 16 mm flange bolt from the auger side and tighten the 6 mm NUT. (There are two holes at the auger side. Insert the 6 x 16 mm flange bolt through either

of the two holes.

AUGER SHAFT

8 mm WHEEL PIN

6 X 12 {6)

{23 X 8.3 X 3.2) {2)

6 X 16 SHEAR BOLT

! SHEAR BOLT BOSS

AUGER

HONDA HSB2B

AUGER TRANSMISSION a. DISASSEMBLY /REASSEMBLY

HS928

~ ~ .

DRAIN PLUG BOLT

SERVICE BULLETIN #8 =>

DOWEL PIN {8 x 14 mm) {2)

GASKET

AUGER TRANSMISSION COVER

AUGER TRANSMISSION CASE

RECOMMENDED OIL: #90 gear oil OILCAPACITY: 0.161(0.169USqt,

0.141 lmpqt)

DRIVER GEAR {55T)

AUGER SHAFT

42mm SNAP RING OIL SEAL

~1~~ .. , BEARING ~ {6004) AUGER TRANSMISSION

CASE CAP

AUGER HOUSING a. OISASSE MBLY/REASSEM

1) Remove th BL Y 2) Remove th: ;uger {P. 1 2~ 1 ).

lnstallati . ~ute (P. 11-1 ). on IS In th 8 order of removal.

SERVICE BULLETIN #19 =>

HS928

CHUTE

CHUTE SETT I ~""' ·-~~~/""' ' . ..

8mm PLAIN WASHER (2)

.I UGER HOUSIN

GUARD G

ADJUSTMENT· p 12-4 .

BEARING (6004 UU)

HONDA HS626

8x16(10)

HONDA HSB2B

- -

HS928

AUGER HOUSING GUARD SERVICE BULLETIN #19 =>

• Adjust auger housing guard ground clearance whenever the guard is removed or replaced.

• Perform this adjustment with the height adjustment pedal in the middle position.

1) Loosen the auger skid plate nuts, and adjust the auger skid to obtain an auger ground clearance as follows.

STANDARD: 4-8 mm (0.16- 0.31 in) FLAT ROAD: 0- 5 mm (0- 0.20 in) ROUGH ROAD: 25 - 30 mm (0.98 - 1.18 in)

2) Loosen the auger housing guard nuts and bolts, and adjust to obtain an auger housing guard ground clearance of 2 -4 mm (0.08- 0.16 in). Tighten the auger housing guard nuts.

3) Readjust the auger skid for snow removal conditions. Tighten the auger skid plate nuts.

AUGER HOUSING GUARD NUT (5)

AUGER HOUSING GUARD I I \

AUGER SKID PLATE NUT (4)

)

(

AUGER SKID PLATE

CLEARANCE BETWEEN AUGER HOUSING GUARD AND GROUND: 2-4 mm (0.08- 0.16 in)

CLEARANCE BETWEEN AUGER AND GROUND: STANDARD: FLAT ROAD: ROUGH ROAD:

4-8 mm (0.16- 0.31 in) 0- 5 mm (0- 0.20 in) 25-30 mm (0.98 -1.18 in)

•

•

HS928

TENSION PULLEY/AUGER BRAKE

1. TENSION PULLEY I AUGER BRAKE

TENSION PULLEY /AUGER BRAKE a. DISASSEMBLY /REASSEMBLY 1) Remove the auger housing (P. 12-3). KEY

(7 X 7 I 33) 'll WI

Pel~

TENSIONER ROLLER RETURN SPRING

AUGER ER RETURN SPRING

SPRING LENGTH

AUGER TENSIONER SPRING

SPRING LENGTH l mm(in)

Tensioner roller spring 75 mm (3.0 in)

Tensioner roller return 50.6 mm (2.0 1n) spring

Auger tensioner spring 82 mm (3.2 1n)

Auger tensioner return 60.9 mm (2.4 1n) spring

TENSION ROLLER

HONDA HSB2B

AUGER PULLEY

NOTE: Be careful not to chan9e the auger pulley for the drive pulley.

DRIVE PULLEY BELT (SA-29)

AUGER PULLEY BELT (LB-35)

I REMOVAL/INSTALLATION: Push the tension roller by hand when I remove or install the belt wh1ch IS slacked. j

(• This spring form is an example.)

HONDA HSS2B

AUGER CLUTCH CABLE

CABLE HOLDER

6 X 12

8 mm FLANGE NUT (2)

COTTER PIN (2)

AUGER BRAKE ARM

DRIVE CLUTCH CABLE

Smm SELF-LOCKING NUT

- ---------------

HS928

AUGER TENSIONER SPRING

TENSIONER ROLLER SPRING

TENSIONER ARM

TENSIONER ARM BUSH (4)

=-----ROLLER BOLT

~b~~--------AUGER TENSIONER ARM

TENSIONER ROLLER RETURN SPRING

AUGER TENSIONER RETURN SPRING

TENSIONER SPRING STAY

0 0

--s x 12 mm FLANGE BOLTS INSTALLATION POSITION

•

•

H5928

HYDROSTATIC TRANSMISSION

HYDROSTATIC TRANSMISSION REMOVAL a. DISASSEMBLY /REASSEMBLY

NOTE:

HONDA HSB2B

~the snowblower be!?..~~:.'!.':coov.:.::ac::.L ______________________ ____j

1 ) Remove the engine {P. 4-1 ). 2) Remove the auger hous1ng iP 12-3) 3) Remove the tension pulley/auger brake (P. 13~1) 4) Remove the tracks (P. 15· 1}

L. ENGINEA BED STAY

8 X 14 (2)

6x12(8)

SEARING (6004 UU)

WHEEL SHAFT BEARING HOLDER

----7''-----BEARING HOLDER

8 X 12 (4)

HONDA HSB2B

ENGINE BED

12 mm WAVE WASHER

8mm PLAIN WASHER (21

8 mm FLANGE NUT (2)

COLLAR (8 X 12 X 4.7) (2)

6 X 16

WASHER

DRIVEN PULLEY

HYDROSTATIC TRANSMISSION

DISASSEMBLY: P. 14-4 REASSEMBLY: P. 14-7 AIR BLEEDING: P. 14-9

HS928

6 16

TRANSMISSION MOUNTING PLATE

8 mm PlAIN WASHER

8 mm FLANGE

R. TRANSMISSION CASE/ ENGINE BED STAY

DISASSEMBLY /REASSEMBLY: P. 14-3

mm FLANGE NUT

TRANSMISSION FLUID RESERVOIR TANK

RESERVOIR HOSE

HS928

HONDA HS62B

R. TRANSMISSION CASE ,...fMJ COUNTERSHAFT BUSH

a. DISASSEMBLY /REASSEMBLY .--------'_:__:_:_::::.:::.:.:_:_~::_::::_:-_ _______ _

WHEEL SHAFT COLLAR

--·· BEARING (6004 UU)

R. TRANSMISSION CASE

I 5 ;;OL I BEARING REMOVER, 12mm 07936-166010A REMOVER WEIGHT 07936-371020A

or 07936-3710200 OR

BEARING REMOVER, 12mm 07936-1660100 REMOVER WEIGHT 07936-371020A

or 07936-3710200

WASHER ........ WHEEL SHAFT FINAL SHAFT DRIVEN GEAR BUSH

WHEELSHAFT ~ '1 ...tMif0 " , 9ii'""'on~""l::,._-'

WASHER

6mmNUT(6)

-+HI COUNTERSHAFT DRIVEN GEAR

WASHER

-+Mt COUNTERSHAFT DRIVE GEAR

REASSEMBL V; Install the countershaft drive gear to the countershaft as shown.

'"""T~~ COUNTERS HAFT DRIVE GEAR

BEARING (6002)

CROSS SHAFT BUSH INSTALLATION

0 t 0

"UP" SIDE

0 ~0 CROSS SHAFT BUSH

DUST SEAL

HS92B

:~~~~s HYDROSTATIC TRANSMISSION [ ___ 1_-_~T-RANSMISSION CASE

1. R. TRANSMISSION CASE a. DISASSEMBLY/REASSEMBLY <WHEEL TYPE>

---· WHEEL SHAFT DRIVEN GEAR ...

BEARING (6004 DUI

R.TRANSMISSION CASE

WASHERS

---· ---~ WHEEL SHAFT

~ SPECIAL _./ _./ BOLT (2)

6 ""'

WASHER

--·· DRIVE GEAR

FINAL SHAFT BUSH

WHEEL SHAFT COLLAR

DUST CAP

R. TRANSMISSION CASE/ ENGINE BED STAY

CROSS SHAFT BUSH

rREASSEMBLY: Install the cross shaft bush as

1 shown.

I

I 0 0

"UP"SIDE

6 mm NUT (6) REASSEMBLY: I 0,0 Install the drive gear as its spline facing cross shaft side as shown.

DRIVE GEAR

I CROSS SHAFT

CROSS SHAFT BUSH

HS92B

HONDA HSB2B

HYDROSTATIC TRANSMISSION DISASSEMBLY /REASSEMBLY a. HYDROSTATIC TRANSMISSION DISASSEMBlY

NOTE:

o REASSEMBLY· P. 14· 7 • Disassemble the rear transmission first when disassembling the hydrostatic transmission • Remove the roller (2.5 x 11.8} before separating the distributer plate and pump case. -- --~~---~--~-

ROLLER (2.5 X 11.8) RELIEF VALVE SEAT STEEL BALL

COLLAR

WAVE \

WASHER~

~~

TRANSMISSION MOUNTING PLATE

CHECK VALVE SPRING (2) I

D-RING .

RELIEF VALVE SPRING

6 X 32

/

~ ~~E:,::,~~ <> \ 8 x 25 RUBBER SEAL

! TROCHOID HOUSING REAR TRANSMISSION (11 X 1.9) DOWEL PIN (2) CASE

0-RING (5.8 X 1.9)

NEUTRAL VALVE PIN

_.--'<"!::-:Cb----- 8 X 45 (2) A-----~ X 90 (2)

X 70 (2)

~----~When removing the steel ball from CHJEC:K the distributer plate, face the neutral

valve up to prevent the steel ball

DISTRIBUTER PLATE

MOTOR CYLINDER

REASSEMBlY: P. 14-7 • Do not exchange motor cylinder

and its cylinder plate for pump ~~~1_nder and its cylinder plate. ~

-----------

from into the fluid

MOTOR SHAFT

BEARING (6001 I

PORT BOLT (10 x 16 mm FLANGE BOLT), VALVE BOLT

REASSEMBLY: Install the 0-ring on the distributer plate first, and then install the bolt and tighten it.

CHECK VALVE BOLT

HS928

b. REAR TRANSMISSION CASE DISASSEMBLY /REASSEMBLY

NOTE

~~~~~-~;r-;~-~ be removed without removing the hydrostatic transmission.

6 X 12

TRANSMISSION RELEASE LEVER

8 x45(2)

BEARING (6002)

,., m'"'"'"'"" ~" BEVEL CROSS SHAFT GEAR

BEVEL GEAR­COLLAR

BEVEL GEAR SHIM

Backlash adjusting shim: A: 1.3 mm (0.051 in) B: 1 .4 mm (0.055 in) C: 1 .5 mm (0.059 in) D; 1.6 mm (0.063 in) E: 1. 7 mm (0.067 in) F: 1 .8 mm (0.071 in)

ADJUSTMENT: P. 14·9

BEARING (6904)

15 mm WASHER

OIL SEAL. HOLDER

HONDA HSB2B

8 X 90 (2)

6 X 16

OIL SEAL (1 5 X 28 X 7)

HS928

HONDA. HSB2B

c. PUMP CASE DISASSEMBlY/REASSEMBlY

CLUTCH ARM

30mm SNAP RING

8 X 65 (6)

SPRING PIN CONTROL BUSH B

BEARING (6003)

OIL SEAL(17 x 30 x 6)

SEALING WASHER (9 X 16 X 1.5) (6)

THRUST NEEDLE BEARING

I REASSEMBLY: P. 14-7

CONTROL BOWL CLIP

CONTROL BOWL RING

PUMP CONTROL BOWL

PUMP SHAFT

BEARING PLATE

I REASSEMBLY: P. 14-7

THRUST BALL BEARING

I REASSEMBLY: p 14-7 J

d. HYDROSTATIC TRANSMISSION REASSEMBLY

HS928

1) Install the pump control bowl in the pump case in the reverse

order of disassembly.

2) Install the needle bearing plate (thin), needle bearing, needle

bearing plate (thick), pump shaft and cylinder assembly.

NOTE·

[-[)~- no·t· ex. change the pump cylinder and. its cylinder plate for !

~~oto~ ~_y_ltnder and its cylmder plate. ______________ j

3) Install two dowel pins B (5 x 8 mm) and a new gasket on the

distributer plate. Install the cylinder plate and cylinder. Hang the thrust ball bearing plate (thick) and thrust ball bearing on the motor shaft. Install the thrust ball bearing plate (thin) in the pump case as

shown. Hold the cylinder in the pump case with your fingers, and install it on the distributer plate.

NOTE

'~tall the--thrust ball bearing plate (thick) on the ~~ylinder I

side. \ • Installation of the port bolt (1. 0 x 16 mm) and check valve j

bolt P. 14-4. • Install the cylinder plate w1th the crescent shaped part

facing upward.

4) Install the six 8 x 65 mm flange bolts and tighten them.

NOTE

Make sure that pump shaft and motor shaft rotate smoothly after reassembly.

HONDA HSB2B

PUMP CONTROL NEEDLE BEARING NEEDLE BOWL PLATE (THIN) BEARING

NEEDLE BEARING

PUMP CASE

PUMP CASE

PUMP SHAFT

DOWEL PIN B (5 x 8 mm) (2)

CRESCENT DISTRIBUTER SHAPED PLATE PART

THRUST BALL BEARING PLATE (THIN)

8x65(6)

THRUST BALL BEARING

GASKET

MOTOR SHAFT

THRUST BALL BEARING PLATE (THICK)

HS928

HONDA HSB2B

51 Install the roller (2.5 x 11 .8) in the hole of the pump shaft. Install the trochoid rotor, aligning its groove with roller.

6) Install the spring, steel ball, valve seat and trochoid vane in the

trochoid housing. Install the dowel pins in the distributer plate. Install the trochoid housing with the suction filter and filter cap

plate.

7) Make sure that motor shaft rotate smoothly.

8) Reassemble the rear transmission in the reverse order of

disassembly (P. 14-5). 9) Install two dowel pins and a new gasket {P. 14-5).

Tighten each bolt and install the transmission release lever.

ROLLER (2.5 X 11 .8)

HOLE

STEEL BALL

MOTOR SHAFT

8 X 45 (2)

GROOVE

PUMP SHAFT

HS928

BEVEL GEAR BACKLASH ADJUSTMENT 1) Make a gauge out of cardboard to adjust the bevel gear

backlash as shown.

NOTE·

Adjust bevel gear backlash after reassembling the hydrostatic transmission. Fill the hydrostatic transmission with hydrostatic transmission· fluid after adjusting the bevel gear backlash.

2) Install the neutral valve spool in the distributer plate and push it in fully by hand. Make sure that the cross shaft rotates smoothly If the cross shaft does not rotate smoothly, replace the bevel gear shim with the next thinner size and check again (P. 14-5).

3) Install the gauge made in step 1) with a 6 mm bolt as shown. 4) Attach the scale to the end of the gauge and measure the bevel

gear backlash, moving the cross shaft. Bevel gear backlash should be within 1 mm (0.04 in). If bevel gear backlash is over 1 mm (0.04 in), replace the bevel gear shim with the next thicker size and check again (P. 14-5).

HYDROSTATIC TRANSMISSION AIR BLEEDING 1) Remove the drain plug bolt and washer from the hydrostatic

transmission. Place the hydrostatic transmission with the hole of the drain plug bolt facing upward.

2) Fill the reservoir tank up with hydrostatic transmission fluid until fluid flows out of the plug bolt hole. Install the washer and drain plug bolt. Add fluid as specified (P. 3-3). and install the diaphragm and cap on the reservoir tank.

---------

HONDA HSB2B

¢ 4 mm (0.2 in) HOLE

c 100 mm (3.9 in)

l NEUTRAL VALVE SPOOL

6 mm BOLT

DRAIN PLUG BOLT

~SHER

--~--

HONDA HBB2B

3) Push the neutral valve spool by transmission release lever.

4) WA transmission types

HS928

Install the drive gear (PIN 23421-767-CSO) on the cross shaft as shown, then rotate the cross shaft 10 turns in the direction shown by the arrow.

TA transmission types Install the drive pulley on the cross shaft as shown and rotate the drive pulley 10 turns to the arrow direction.

5) Pull the neutral v81ve spool out and install the driven pulley on the pump shaft. Push the clutch arm to either the right or left direction by hand until the clutch arm does not move. Rotate the driven pulley 30 turns in the direction shown by the arrow. Make sure that cross shaft is mavin~ when turning the driven pulley.

NOTE:

·Rotate the driven pulley (pump shaft) counterclockwise (arrow

direction).

6) Install the hydrostatic transmission (P. 14~ 11 ), and then start the engine and move the snowblower for a few minutes on an asphalt or concrete~paved road.

NOTE:

• Abnormal sounds indicate insufficient air bleeding (steps 4 and 5). In this case, move the snowblower for five or six minutes.

• Aher moving, check the hydrostatic transmission fluid level and add the fluid if necess<iry. {P. 3~3).

TRANSMISSION RELEASE LEVER

NEUTRAL VALVE SPOOL

{for WA transmission)

CROSS SHAFT

{for TA transmission)

CROSS SHAFT

DRIVEN PULLEY

ClUTCH ARM

HYDROSTATIC TRANSMISSION INSTALLATION

HS928

1) Install the transmission mounting plate on the hydrostatic transmission, using the following parts: - (i) : 8 x 40 mm flange bolt - 0: Collar -G) : Wave washer -CD· Plain washers -CD . 8 mm flange nut

NOTE:

Be careful not to pinch the collar and wave washer

2) Install the hydrostatic transmission on the engine bed, aligning the hole of the transmission mounting plate with the 8 mm stud bolt of the engine bed. Temporarily install the washer and 8 mm flange nut.

3) Insert the cross shaft of the hydrostatic transmission in the drive gear hole of the R transmission case/engine bed stay. Install the R. transmission case/engine bed stay on the engine bed with two 8 x 14 mm flange bolts.

4) Install the wheel shaft bearing holder and 6004 UU bearing on the wheel shaft. Install the bearing holder and 6201 UU bearing on the cross

shaft. Temporarily install the left engine bed stay on the engine bed with three 8 x 14 mm flange bolts. Temporarily install six 6 x 12 mm flange bolts on the cross and wheel shaft bearing holders on the left engine bed stay Make sure that the wheel shaft (A·A' line) does not twist, and tighten the left engine bed stay bolts (8 x 14 mm flange bolts) and cross and wheel shaft bearing holder bolts (6 x 12 mm flange bolts) securely. Make sure that A-A· line and B-8' line are parallel after tighten them. Tighten the 8 mm flange nut in the step 2) securely.

8 mm FLANGE NUT

WASHER

HOLE OF THE TRANSMISSION MOUNTING PLATE

8 X 14 (2)

WHEEL SHAFT

B

A

HONDA HSB2B

TRANSMISSION MOUNTING PLATE

TRANSMISSION

8 mm STUD BOLT

R. TRANSMISSION CASE/ENGINE BED STAY

ENGINE BED

LEFT ENGINE BED STAY

A'

HONDA HSB2B

5) Install the engine bed stay and engine bed stay (B).

HS928

6) Make sure that there is 0.5 - 1.0 mm (0.02 - 0.04 in) free play when moving the tip of the pump shaft by hand. , Make sure that wheel shaft (A-A' line) and cross shaft (B-B line) do not twist and are parallel again.

SHIFT CABLE ADJUSTMENT NOTE:

Install the shift cable with the short metal fitting to the clutch arm side if removing the shift cable both ends.

1) Loosen the lock nut and adjusting nut, and hook the shift cable on the shift cable stay.

2) Install the shift cable on the clutch arm, using the setting pin and 6 mm Jock pin.

8 X 12 (4}

PUMP SHAFT

STAY

8 X 12 (4)

ENGINE BED STAY IBI

CLUTCH ARM

(J):r:2--ID"-"i.i~-- 6 mm

SETIING PIN LOCK PIN

HS928

3) Make sure that shift cable is installed correctly as shown. Shift lever and shift cable installation: (P.16-1 ).

4) Move the shift lever all the way forward against the stop, and check the clearance between the shift lever and the control panel. The clearance should be 4 mm (0.2 in). If adjustment is necessary, loosen the 6 mm nuts, and move the shift lever stop Tighten the 6 mm nuts securely.

5) Adjust the distance between the end of the metal fitting and lock nut to 40 mm (1.6 in).

6) Move the shift lever to all the way forward against the stop. 7) Hold the shift cable by hand.

Pull the shift cable down, and adjust the shift cable using the adjusting nut (cable holder side), until there is no slack from cable holder to the shift lever. Tighten the lock nut securely

6mm NUTS

HONDA HSBi2B

SHIFT CABLE INSTALLATION HOLE

FORWARD DIRECTION

CONTROL PANEL

4 mm (0.2 in)

SHIFT LEVER FORWARD DIRECTION

NO SLACK~

ADJUSTING NUT

LOCK NUT

~-==--_-"-ADJUSTING

LOCK o NUT NUT

40 mm ..... (1.6 ;n)

I

~--CABLE ROUTING

HONDA HSBE!B

1. TRACKS

TRACKS a. DISASSEMBLY /REASSEMBLY

SERVICE BULLETIN #13=>

10 mm FLANGE NUT(2)

ADJUSTMENT: P. 3-4

TRACK SPROCKET-------------4~C~r.i COLLAR

BEARING HOLDER

BEARING (6004 UU)

TRACK SPROCKET COLLAR

HS928

DUST SEAL (20 X 34 X 7.5)

COLLAR

TRACKS

COLLAR

HEIGHT ADJUSTING PEDAL

ROLLER

---:!2 mm PLAIN WASHER(2)

TRACK

•

HS928

TRACKS/WHEELS HONDA HS624·HSB2B

,------------1. WHEELS

-----------------------

1. WHEELS a. DISASSEMBLY/REASSEMBLY

GASKET

REASSEMBLY: 6 mm Check the gasket for damage. PIN

INSTALLATIONJ. lnftale to 59kPa (0.6kg/cm2 , 8.5 psi)

WHEElS

I REASSEMBlY,"- -~ Check the wheel bead

1 seat and flanges. j

AIR VAlVE

•

HS928

WHEEL SHAFT PIN INSTALLATION 1) Install the wheel shaft pin on the wheel shaft with its head

facing outside as shown.

2} Instal! the cotter pin on the wheel shaft pin and bend the cotter pin until its tip ·,s within the wheel shaft pin 0.0.

CO ITER PIN

WHEEL SHAFT PIN

COLLAR

HONDA HSS2B

COLLAR

WHEEL SHAFT

WHEEL rHAFT PIN 0.0.

~n ~

COITER PIN

HS928

HONDA SHIFT LEVER/CHUTE LEVER/CONTROL PANEL HSB2B

1. SHIFT lEVER/ CHUTE lEVER/CONTROl PANEl

SHIFT LEVER/CHUTE LEVER/CONTROL PANEL a. DISASSEMBLY /REASSEMBLY

4.5-5.0 mm (0. 18-0.20 in)

ADJUSTING <m--. ARM SPRING

(CHUTE LEVER) SIDE)

6mm LOCK PIN (2)

SHIFT LEVER

ADJUSTMENT: P. 16·2 SHIFT CABLE INSTALLATION POSITION:

0

0

(o

INSTALLATION POSITION

CONTROL #-~ , PANEL ~ ~ l. STOPPER

~~~ PLATE ADJUSTING ARM

rl------J\(11 \\/ SETTING SPRING (2)

~X \Jl\.· \) SCREW 121 ) ADJUSTMENT: P 16·1

Bmm ~~-....4MI NUT(21~ •, '-~ ~, FRICTION ~ , ~~~"~PJ ~tJ! WASHER (4) @-@ /f..

_.., ~ < ®®~~ I 8 mm PLAIN ~ ~~~ I WASHER (2) ~ @"'(I]} (1]}/1~ if

~:U."l::::~, ,~f)'~

R. STOPPER ARM ---· / FRICTION SETTING ~ '

WASHER (4) ~ \

5x12mm / PAN SCREW (2)

5mm PLAIN WASHER (2)

Bmm NUT {2)

---B mm PLAIN WASHER (4)

~--FRICTION WASHER (3)

----·-----

•

•

SHIFT LEVER LOAD ADJUSTMENT Shift lever load adjustment is made by screwing the two 8 mm nuts in or out.

1) Move th shift lever to the "FORWARD" position fully. 2) Screw the 8 mm nut in so the shift lever load is within the

following specification.

SHIFT lEVER toAD: 3.0- 5.0 kg (6.6- 11.0 lbJ

After adjustment tighten the 8 mm nut securely.

NOTE·

• The shift lever may move if the shift lever load Is under the specification. Measure the load as shown in the illustration.

• Adjust the shift cable after this adjustment (P.14-12)

CHUTE GUIDE LEVER LOAD ADJUSTMENT Chute guide lever load adjustment is made by screwing the two 8 mm nuts in or out.

1) Move the chute guide lever to the "UP" position. 2) Screw the 8 mm nut in so the chute guide lever load is within

the following specification.

CHUTE GUIDE LEVER LOAD: 6.0- 7.0 kg {13- 15 lb)

After adjustment. tighten the 8 mm nut securely.

NOTE·

• The chute guide lever may move if the chute guide lever load is under the specification. Measure the load as shown in the illustration.

• Adjust the chute guide cble after this adjustment (P.3-5).

HS9Z8

OPERATOR SIDE

8 mm NUT

HONDA. HSB2B

8 mm NUT

30mm {1.2 in)

HONDA HSB2B

1. CHUTE LEVER

CLUTCH LEVER a. DISASSEMBLY /REASSEMBLY

DRIVE CLUTCH LEVER

HS928

CLUTCH LEVER/HANDLE 2. HANDLE

CLUTCH LEVER CLUTCH

SHAFT

14 mm BUSHING

DRIVE CLUTCH CABLE ----_':;;;L..,...<::l:J,~~"' I ADJUSTMENT: P. 3-6

RACHET---­SPRING

...... .,. RATCHET COLLAR

LEVER RATCHET

PIVOT BOLT

X 10 (2)

...... CAM LOCK BOSS

WASHER

mm CAP NUT

WASHER

COTTER PIN

[ Do not reuse.

13 x 23 mm BUSHING

LEVER SPRING

CLUTCH CABLE

I ADJUSTMENT: p 3· 7

•

HONDA HS724 • HS928

HS928

17. CHUTE LEVER/HANDLE 1. HANDLE - ·r ~~~ --------------- --------·-------··----'

1. HANDLE a. DISASSEMBl V /REASSEMBLY

HANDLE GRIP (2) THROTILELEVER

REASSEMBLY: I Apply adhesive to the. THROTILE LEVER PLATE SPRING SEAT handlebars when installing i

the grips. _ _j 6 mm CAP NUT

ENGINE SWITCH

~

WIRE HARNESS BAND

ENGINE SWITCH WIRE

GROUND CABLE

6 X 12

THROTILE LEVER SPRING

HANDLEBAR

THROTILE CABLE

8 mm FLANGE NUT (4)

FRAME JOINT WASHER(4)

HONDA HSB2B

1. AC STARTER MOTOR

AC STARTER MOTOR a. REMOVAL/INSTALLATION o AC STARTER SWITCH

o AC STARTER MOTOR 1) Remove the fan cover {P.6-1 ).

I

k ~·

8 X 35 (2)

HS928

AC STARTER MOTOR

AC STARTER SWITCH

I DISASSEMBLY /REASSEMBLY: P. 18·2

GROUND CABLE

/

6x8 6 X 12 (3)

AC STARTER MOTOR

Measure staner performance while cranking the engine. If performance is not within service limits, disassemble and inspect as described on page 18-2.

Cranking voltage

Cranking current

Engine cranking speed

Under load

117V AC

Below 13.1A

More than 400 min-1 (rpm)

No load

117V AC

HS928

b. DISASSEMBLY /REASSEMBLY

REDUCTION GEAR

DRIVE GEAR

PINION HOUSING

CASE • WHITE LEAD

STARTER SWITCH

BRUSH 121

INSPECTION: P. 18-3 REASSEMBLY:

HONDA HSB2B

Push in the brushes so they do not interfere with the commutator.

ARMATURE

INSPECTION: P 18-4 REASSEMBLY: Visually inspect the commutator surface for dust, rust or other damage. If necessary, wipe it with a clean lint-free cloth. If rusted

dress with a fine cloth

YOKE

REASSEMBLY:

x30mm SCREW-WASHER (3)

Make sure that there 1s no obstruction on the

HONDA HBB&B

c. INSPECTION • BRUSH LENGTH Measure the brush length.

HS928

lf brush length is less than standard, replace the bursh and brush spring.

STANDARD SERVICE LIMIT 9 mm (0.35 in) 5 mm (0.20 in)

• OVERRUNNING CLUTCH 1) Check the overruning cluth for smooth axial movement. Apply

oil or replace the overruning clutch if necessary.

2) Check reduction gear movement by holding the pinion gear and turning the reduc.tion gear. The reduction gear should turn counterclockwise freely and should not turn clockwise.

3) Check the pinion gear for wear or damage and replace if necessary.

NOTE:

• If the pinion gear is worn or damaged, the flywheel ring gear must be inspectd.

• STARTER SWITCH There should be continuity with the starter switch button pushed and no continuity with the starter switch button released. Replace the starter switch if necessary.

PINION GEAR

• DIODE PACK

Check for continuity between the terminals.

.. ~. NEGATIVE PROBE ~---i ~ ··---:;:--·· -1 . -2 f-· --

POSITIVE + ~ 0 0 0

PROBE -1 ~ ~ ~ 0

-2 = = -....____ 0

- = ~ ~

--------There should be continuity at the position marked with , and no continuity at the posit1on marked with=.

• ARMATURE • COUNTINUITY CHECK-SEGMENTS Check for continuity between segments. If an open circuit exists between any two segments, replace the armature

• SHORT CIRCUIT TEST-CORE TO COMMUTATOR

Check for continUity between the commutator and armature coil core. If continuity exists, replace the armature.

• SHORT CIRCUIT TEST-SHAFT TO COMMUTATOR

Check for continuity between the commutator and armature shaft. If there is continuity, replace the armature.

HS928

HONDA HSS2S

-1 + -1 CIRCUIT

+

-2 -2

------·--- ----··-·

HONDA HSB2B

• MICA DEPTH Clean the segment with a soft brush if necessary.

H$928

Replace the armature if the mica depth is less than the service limit.

SERVICE LIMIT: 0.3 mm (0.01 in)

•

•

HS928

OPERATION HONDA HSS2S

~·· 1. HST (HYDROSTATIC TRANSMISSION) 2. THROTTLE LEVER INTERLOCKED CHOKE

HST (HYDROSTATIC TRANSMISSION) <Summary>

The HST {hydrostatic transmission) hydrostatically and stagelessly shifts the gear from FORWARD to REVERSE gear and from REVERSE to FORWARD gear. With a simple shift operation, you can select the best speed for various snow clearing conditions .

HONDA HSB2B

<Operating principle>

H$928

The oil pressure pump consists of the control yoke, that changes the tilt angle, and the pump cylinder that contains the seven ptstons.

PUMP CYLINDER

0

PISTON

Engine power is transmitted to the pump shaft through the V-belt, and the pump shah rotates the pump cylinder. As the control yoke angle changes, the pistons in the pump cylinder start reciprocating.

PUMP SHAFT

(VIEWED FROM THE CONTROL YOKE SIDE)

HS928

HONDA HSB2B

The fluid is drawn into the oil pressure pump through the suction port and is discharged through the discharge port by this reciprocating motion of the pistons. The discharged amount of the fluid varies according to the control yoke angle.

SUCTION PORT OF THE OIL PRESSURE PUMP

SUCTION PORT OF THE OIL PRESSURE MOTOR

OIL ,,._-J._PRESSURE

MOTOR

,( I) > -'

~

The discharged fluid is drawn into the oil pressure motor. The oil pressure motor consists of the bearing, which is set at a certain angle, and the motor cylinder which contains the 7 pistons. Getting the pressure of the fluid drawn through the suction port, the pistons are pushed along the motor bearing and it rotates together with the motor cylinder. The motor speed varies according to the amount of fluid drawn through the suction port.

MOTOR CYLINDER BEARING

(VIEWED FROM THE BEARING SIDE)

PISTON

HONDA HSB2B

HS928

The piston moves along the bearing and enters the discharge stroke after it passes the bottom dead center. Fluid is discharged

to the oil pressure pump this time.

BOTTOM DEAD CENTER

TOP DEAD CENTER

Oil flow

<In forward gear>

DISCHARGE PORT OF THE OIL PRESSURE MOTOR

I SUCTION PORT OF THE OIL PRESSURE PUMP

The fluid discharged from the oil pressure pump rotates the oil pressure motor and returns to the oil pressure Pump. The fluid leaked through the gaps in the hydrostatic circuit is compensated with the fluid from the charging pump

OIL PRESSURE PUMP

OIL PRES

CHARGI PUMP

CHECK VALVE

OIL PAN

HS928

HONDA HSB2B

<In reverse gear> When the shift lever is moved to REVERSE, the control yoke tilts to the reverse side and exchanges the suction port and discharge port of the oil pump, resulting in reverse oil flow and reverse motor cylinder rotation.

OIL PRESSURE MOTOR

Shift lever in STOP

CHECK

===~[VALVE

OIL PAN

When the shift lever is moved to the STOP position. the oil pump pistons' reciprocating motion and discharge of fluid stop. The fluid drawn into the charging pump returns through the relief valve to the case.

OIL PUMP

RELIEF LVALVE

HONDA HBB2B

Transmission release lever

HS928

When the oil pressure motor is rotated by outside force with the engine stopped, as when the operator pushes the snowblower, the oil pressure motor operates in the same manner as the oil pressure pump (that is suction and discharge of fluid). With the neutral valve ON, the oil pressure pump and the oil pressure motor are connected with the hydrostatic circuit. As the oil pressure pump does not rotate this time, the hydrostatic circuit closes and locks the tracks or wheels.

NEUTRAL VALVE

When the neutral valve is turned OFF (to move the snowblower by pushing it), the hydrostatic circuit opens and the oil pressure motor starts so that the snowblower can be moved by pushing.

OIL PAN :d:!J

HS928

THROTILE LEVER INTERLOCKED CHOKE The choke for starting the eng·me is interlocked the throttle lever tor convenience. Operating the choke and adjusting the engine r.p.m. can do easily with only one lever.

<Summary> Throttle control linkage includes® control lever,® speed control lever and© choke lever. ®and® are connected with the lever spring which exceeds the load of the governor spring. The throttle cable is connected to® and the governor spring is connected to 0.

@SPEED CONTROL LEVER

HONDA HSB2B

© CHOCK LEVER

0 CONTROL LEVER

LEVER SPRIN

<Operating>

1) Standard engine speed- Maximum speed

Moving the throttle lever from "SLOW" to "FAsr·. pulls® by the throttle cable and operates® by the lever spring at the same time. The governor spring is pulled by® operation and the engine runs at speed.

@SPEED CONTROL LEVER

• Standard engine speed adjustment is made by adjusting screw CD. • Maximum engine speed adjustment is made by adjusting screw 0.

THROTILE CASE

ADJUSTING SCREW(j)

HONDA HSB2B

HS928

2) When moving the throttle lever to "CHOKE",® contacts the adjusting screw® and stops. Lever spring tension moves the speed control lever@, pulling the choke lever© in the direction shown in the illustration. The choke valve of the carburetor is fully closed by the choke rod.

THROTILE LEVER

ADJUSTING SCREW CD

®CONTROL LEVER

AOJUSTING SCREW CD

LEVER SPRING

INDEX AC starter motor Air cleaner Auger

18-1 5-1

disassembly/reassembly ......................................... 12~1 belt ...................................................................... 3-7 housing ............................................................... 12-3 transmission .......................................................... 12-2

Belt stopper ............................................................ 3-11 Bevel gear backlash adjustment . . ........ 14-9 Cable/harness routing ............................................ 2-21 Camshaft ............................................................... 10-6 Carburetor inspection ...•................ . ...•........... disassembly/reassembly ................... .

Chute

3-5 5-2

disassembly/reassembly.............................. 11·1 guide control cable ....... ............................. 3-5

Clutch lever ... . ............................................. 17-1 Crankshaft .............................................................. 10-3 Cylinder head/valves ............................................... 8-1 Cylinder/crankcase ........... ................. 9-1 Dimensional drawing ............................................... 1-3 Drive belt ............................................................... 3-6 Engine oil . . .. ........ ... . . . ... .. ...... ............ ... ... . . ... . .. . . ... ... 3-2 Engine removal/installation ...................................... 4-1 Flywheel/ignition coil .............................................. 7-1 Fuel strainer cap .. . .. . . .. . . .. .. . ... ... ......... .. . . .. . . ... . .. . . .. . . .. 3-4 Fuel tank/fuel strainer ............................................. 3-6 Fuel tank/governor ................................................. 5-4 General safety ......................................................... 2-1 Handle ........................................ , .................. , ...... 17-2 HST (hydrostatic transmission) ................................. 19-1 Hydrostatic transmission air bleeding ........................................................... 14-9 disassembly/reassembly ......................................... 14-4 fuid ........................................................ 3~ installation .......................................................... 14-1 1 removal ..................................................... 14-1

lubrication points .................................................... 2-20 Maintenance schedule . . . ... . . .. . . ... .. .. . .. . . .. . .. .. ... ... . .. .. ... . . .. . 3-1 standards . . . . .. . .. . . .. . .. . . . . . . . .. . .. .. . .. .. .. . . ... . . .. . .. . . . . . .... ... 2-3

Muffler................................................................... 6-4 Piston .................................................................... 10-1 Recoil starter /fan cover .... ... ...... ...... .. . . .. . .. .. . 6-1 Right transmission case ........................................... 14-2 Serial number location .. .... . .. .. . .. ............ .... .... .. . . .... . .. 2-2 Service rules ........................................................... 2-1 Shear bolts ............................................................. 3-4 Shift cable adjustment ........................................... 14~12 Shift level/chute lever/control panel ......................... 16-1 Spark plug .............................................................. 3-3 Special tools ........................................................... 2-6 Specifications ......................................................... 1-1 Tension pulley/auger brake ...................................... 13-1 Throttle lever interlocked choke ................................ 19-7 Throttle/choke cable ............................................... 3·9 Torque values ......................................................... 2-5 Tracks

adjustment ................... ........................................ 3-4 disassembly/reassembly ........................................ 15-1

Troubleshooting .............. ....... .... .......... 2-7 Valve clearance ....................................................... 3~12

HS928

HONDA HSB28