operation manual to order go to discount … · 1. the vibration level indicated is the maximum rms...

OPERATION MANUAL

P/N 21768

KOHLER 27 HP

KOHLER 28 HP EFI

SERIESMODEL CA4HCMODEL CA4HCMODEL CA4HCMODEL CA4HCMODEL CA4HC

WALK-BEHIND TROWEL(HONDA GASOLINE ENGINE)

Revision #0 (09/29/06)

THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALL TIMES.

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Grinding/cutting/drilling of masonry, concrete, metal andother materials with silica in their composition may giveoff dust or mists containing crystalline silica. Silica is abasic component of sand, quartz, brick clay, granite andnumerous other minerals and rocks. Repeated and/orsubstantial inhalation of airborne crystalline silica cancause serious or fatal respiratory diseases, includingsilicosis. In addition, California and some otherauthorities have listed respirable crystalline silica as asubstance known to cause cancer. When cutting suchmaterials, always follow the respiratory precautionsmentioned above.

WARNING

Grinding/cutting/drilling of masonry, concrete, metal andother materials can generate dust, mists and fumescontaining chemicals known to cause serious or fatalinjury or illness, such as respiratory disease, cancer,birth defects or other reproductive harm. If you areunfamiliar with the risks associated with the particularprocess and/or material being cut or the composition ofthe tool being used, review the material safety datasheet and/or consult your employer, the materialmanufacturer/supplier, governmental agencies such asOSHA and NIOSH and other sources on hazardousmaterials. California and some other authorities, forinstance, have published lists of substances known tocause cancer, reproductive toxicity, or other harmfuleffects.

Control dust, mist and fumes at the source wherepossible. In this regard use good work practices andfollow the recommendations of the manufacturers orsuppliers, OSHA/NIOSH, and occupational and tradeassociations. Water should be used for dustsuppression when wet cutting is feasible. When thehazards from inhalation of dust, mists and fumes cannotbe eliminated, the operator and any bystanders shouldalways wear a respirator approved by NIOSH/MSHA forthe materials being used.

WARNING

SILICOSIS WARNING RESPIRATORY HAZARDS

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— CA4HC WALK-BEHIND TROWEL— OPERATION MANUAL — REV. #0 (09/29/06)

CA4HC TROWEL— TABLE OF CONTENTS

Specifications andpart numbers aresubject to changewithout notice.

NOTE

MQ WHITEMAN CA4HCWALK-BEHIND TROWEL

Table Of Contents ..................................................... 4Dimensions ............................................................... 5Specifications ............................................................ 6Training Checklist ...................................................... 8Daily Pre-Operation Checklist ................................... 9Safety Message Alert Symbols .......................... 10-11Rules For Safe Operation .................................. 12-13Operation And Safety Decals .................................. 14General Information ................................................ 15Controls and Components ...................................... 16Basic Engine ........................................................... 17Handle Assemblies ............................................ 18-19Pre-Inspection .................................................... 21-22Initial Start-Up .................................................... 23-24Operation ........................................................... 25-26Options .................................................................... 26Maintenance ...................................................... 27-30Troubleshooting (Trowel) ........................................ 31Troubleshooting (Engine) ........................................ 32

Terms and Condition Of Sale .................................. 35

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CA4HC WALK-BEHIND TROWEL — OPERATION MANUAL — REV. #0 (09/29/06) — PAGE 5

CA4HC TROWEL— DIMENSIONS

Figure 1. CA4HC Trowel Dimensions

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CA4HC TROWEL— SPECIFICATIONS

2. Sound pressure is a weighted measure. It is measured atthe operator's ear position while the walk-behind trowel isoperating at full throttle on concrete in a manner most oftenexperienced in “normal” circumstances. Sound pressuremay vary depending upon the condition of the concrete.

1. The vibration level indicated is the maximum RMS (RootMean Square) value obtained at the handle grip whileoperating the walk-behind trowel at full throttle on steelplate with blades partially pitched.

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NOTE PAGE

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TRAINING CHECKLIST

This checklist will lists some of the minimum requirements formachine maintenance and operation. Please feel free to detachit and make copies. Use this checklist whenever a new operatoris to be trained or it can be used as a review for more experiencedoperator’s.

Operator _________________________________________ Trainee __________________________________________

COMMENTS:

CA4HC TROWEL— TRAINING CHECKLIST

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DAILY PRE-OPERATION CHECKLIST

COMMENTS:

CA4HC TROWEL— DAILY PRE-OPERATION CHECKLIST

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CA4HC TROWEL— SAFETY MESSAGE ALERT SYMBOLS

Safety precautions should be followed at all times when operatingthis equipment. Failure to read and understand and comply withthe Safety Messages and Operating Instructions could result ininjury to yourself and others.

FOR YOUR SAFETY AND THE SAFETY OF OTHERS!

This Owner's Manual has been developed to provide completeinstructions for the safe andefficient operation of the MQWhiteman CA4HC TROWEL.For engine maintenanceinformation, please refer to theengine manufacturer'sinstructions for data relative to itssafe operation.

Before using this WALK-BEHIND TROWEL, ensure that theoperating individual has read, understands, and complieswith all instructions in this manual.

HAZARD SYMBOLS

Engine exhaust gases contain poisonouscarbon monoxide. This gas is colorless andodorless, and can cause death if inhaled.NEVER operate this equipment in a confinedarea or enclosed structure that does notprovide ample free flow air.

Gasoline is extremely flammable, and itsvapors can cause an explosion if ignited. DONOT start the engine near spilled fuel orcombustible fluids. DO NOT fill the fuel tankwhile the engine is running or hot. DO NOToverfill tank, since spilled fuel could ignite if itcomes into contact with hot engine parts orsparks from the ignition system. Store fuel inapproved containers, in well-ventilated areasand away from sparks and flames. NEVERuse fuel as a cleaning agent.

Burn Hazards

Engine components can generate extreme heat.To prevent burns, DO NOT touch these areaswhile the engine is running or immediately afteroperations. NEVER operate the engine withheat shields or heat guards removed.

Guards and Entanglement Hazards

NEVER operate equipment with covers, orguards removed. Keep fingers, hands, hairand clothing away from all moving parts toprevent injury.

Explosive Fuel

Lethal Exhaust Gases

NOTE

SAFETY MESSAGE ALERT SYMBOLS

The three (3) Safety Messages shown below will inform youabout potential hazards that could injure you or others. TheSafety Messages specifically address the level of exposure tothe operator, and are preceded by one of three words: DANGER,WARNING, or CAUTION.

You WILL be KILLED or SERIOUSLY INJUREDif you DO NOT follow these directions.

You CAN be KILLED or SERIOUSLY INJURED ifyou DO NOT follow these directions.

You CAN be INJURED if you DO NOT followthese directions.

CAUTICAUTICAUTICAUTICAUTION

DANGERDANGERDANGERDANGERDANGER

WARNINGWARNINGWARNINGWARNINGWARNING

Potential hazards associated with trowel operation will bereferenced with Hazard Symbols which appear throughout thismanual, and will be referenced in conjunction with SafetyMessage Alert Symbols.

Rotating Blades Hazards

NEVER place hands or feet inside the guardrings while the engine is running.

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Accidental Starting

ALWAYS place the engine ON/OFFswitch in the OFF position, when thetrowel is not in use.

Over Speed Conditions

NEVER tamper with the factory settings of theengine governor or settings. Personal injuryand damage to the engine or equipment canresult if operating in speed ranges abovemaximum allowable.

Respiratory Hazard

ALWAYS wear approved respiratory protection.

ALWAYS wear approved eye and hearingprotection.

Sight and Hearing hazard

Equipment Damage Messages

Other important messages are provided throughout this manualto help prevent damage to your trowel, other property, or thesurrounding environment.

CA4HC TROWEL— SAFETY MESSAGE ALERT SYMBOLS

This walk-behind trowel, other property, or thesurrounding environment could be damagedif you do not follow instructions.

CAUTICAUTICAUTICAUTICAUTION

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CA4HC TROWEL — RULES FOR SAFE OPERATION

The following safety guidelines should always be used whenoperating the CA4HC.

SAFETY

■ DO NOT operate or service this equipmentbefore reading this entire manual. Themanual must be kept available and accessibleto the operator.

■ This equipment should not be operated by persons under theminimum statutory age limit.

■ ALWAYS use extreme caution when working with flammableliquids. When refueling, STOP the engine and allow it to cool.

■ NEVER touch the hot exhaust manifold, muffleror cylinder. Allow these parts to cool beforeservicing the trowel.

■ The engine of this trowel requires an adequate free flow ofcooling air. NEVER operate the trowel in any enclosed or

narrow area where free flowof the air is restricted. If theair flow is restricted it willcause serious damage tothe engine and may causeinjury to people. Rememberthe engine gives offDEADLY carbon monoxidegas.

■ High Temperatures – Allow the engine to cool before addingfuel or performing service and maintenance functions. Contactwith hot! components can cause serious burns.

■ ALWAYS refuel in a well-ventilated area, away from sparksand open flames.

RULES FOR SAFE OPERATION

■ ALWAYS check the trowel for loosened hardware such asnuts and bolts before starting.

■ Replace nameplate, operation and safety decals when theybecome difficult to read.

■ NEVER use accessories or attachments which are notrecommended by Multiquip for this equipment. Damage tothe equipment and/or injury to user may result.

■ Manufacturer does not assume responsibility for any accidentdue to equipment modifications. Unauthorized equipmentmodification will void all warranties. Any modification whichcould lead to a change in the original characteristics of themachine should be made only by the manufacturer who shallconfirm that the machine is in conformity with appropriatesafety regulations.

WARNINGWARNINGWARNINGWARNINGWARNINGFailure to follow instructions in this manual may lead to seriousinjury or even death! This equipment is to be operated bytrained and qualified personnel only! This equipment is forindustrial use only.

■ NEVER smoke around or near the machine.Fire or explosion could result from fuelvapors, or if fuel is spilled on a hot! engine.

■ Topping-off to filler port is dangerous, as it tends to spill fuel.

■ NEVER use fuel as a cleaning agent.

■ NEVER operate this equipment when not feeling well due tofatigue, illness or taking medicine.

■ NEVER operate the trowel under the influence or drugs oralcohol.

■ NEVER operate the trowel without proper protective clothing,shatterproof glasses, steel-toed boots and other protectivedevices required for the job.

■ NEVER use this machine for any purpose other than thosedescribed in this manual.

■ NEVER operate the trowel in anexplosive atmosphere where fumesare present, or near combustiblematerials. An explosion or fire couldresult in severe bodily harm or evendeath.

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■ NEVER Run engine without air filter. Severe engine damagemay occur. Service air filter frequently to prevent carburetormalfunction.

■ NEVER place your feet or hands inside the guard ringswhile starting or operating this equipment.

■ AVOID wearing jewelry or loose fitting clothing that may snagon the controls or moving parts as this can cause a seriousinjury.

■ ALWAYS keep clear of rotating or moving parts whileoperating the trowel.

■ Moving Parts – Shut down the engine before performingservice or maintenance functions. Contact with moving partscan cause serious injury.

■ ALWAYS check to make sure that the operating area is clearbefore starting the engine.

■ NEVER leave the machine unattended while running.

■ ALWAYS be sure the operator is familiar with proper safetyprecautions and operations techniques before using trowel.

■ ALWAYS keep the work area well organized.

■ ALWAYS clear the work area of any debris, tools, etc. thatwould constitute a hazard while the trowel is in operation.

■ ALWAYS know the location ofthe nearest fire extinguisher.

CA4HC TROWEL — RULES FOR SAFE OPERATION

■ ALWAYS know the location of thenearest first aid kit.

■ In emergencies always know the location of thenearest phone or keep a phone on the job site.Also know the phone numbers of the nearestambulance, doctor and fire department. Thisinformation is invaluable in the case of anemergency and could keep a serious situation frombecoming a tragic one .

■ NEVER lubricate components or attempt service on a runningtrowel.

■ ALWAYS allow the trowel a proper amount of time to coolbefore servicing.

■ Keep the trowel in proper running condition.

■ Fix damage to the trowel immediately and always replacebroken parts.

■ Dispose of hazardous waste properly. Examples of potentiallyhazardous waste are used motor oil, fuel and fuel filters.

■ DO NOT use food or plastic containers to dispose ofhazardous waste.

■ ALWAYS shutdown engine before transporting.

■ Tighten fuel tank cap securely and close fuel cock to preventfuel from spilling.

■ Drain fuel when transporting trowel over long distances orbad roads.

Transporting

■ ALWAYS store equipment properly when it is not being used.Equipment should be stored in a clean, dry location out of thereach of children.

■ No one other than the operator is to be in the working areawhen the trowel is in operation.

■ Always observe all applicable compulsory regulationsrelevant to environmental protection, especially, fuel storage,the handling of hazardous substances, and the wearing ofprotective clothing and equipment. Instruct the user asnecessary, or, as the user, request this information andtraining.

Emergencies

■ When placing the trowel inside a truck-bed for transport,always tie-down the trowel.

■ ALWAYS use proper lifting techniques when moving thetrowel.

ALWAYS check to make sure that the operating area isclear before starting the engine.


Maintenance Safety

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CA4HC TROWEL— OPERATION AND SAFETY DECALS

OPERATION AND SAFETY DECALS

The CA4HC walk-behind trowel is equipped with a number of operation, safety and maintenance decals. Should any of thesedecals become unreadable, replacements can be obtained from your dealer.

P/N 20936

P/N 2942 WHITE TEXT 13”

PO

WER TROW

EL

P/N 1848

P/N: 11246

P/N: 13118

P/N: 1492(STANDARD MODEL)

P/N: 21455

P/N 35137

To avoid injury,you MUST readand understandoperator’s manualbefore using thismachine.

Ask for trainingas needed.

This machine tobe operated byqualifiedpersonnel only.

P/N 35137

WARNING

MODELSERIAL NO.

P/N 36099 (ISO Blue)

P/N 20816

Engine exhaust and some ofits constituents, and some dust created

of California to cause cancer, birthdefects and other reproductive harm.

by power sanding, sawing, grinding,drillingandotherconstructionactivitiescontains chemicals known to the State

Some examples of these chemicals are:

Leadfromlead-basedpaints.Crystallinesilicafrombricks.Cementandothermasonryproducts.Arsenicandchromiumfromchemicallytreatedlumber.

Your risk from these exposures varies,dependingonhowoftenyoudothistypeof work. To reduce your exposure tothese chemicals: work in aALWAYSwell ventilated area, and work withapproved safety equipment, such asdust masks that are specially designedto filter out microscopic particles.

CONTACTPARTSDEPARTMENT

P/N 20525 P/N 21302P/N 35168

P/N 11092

WARNING

ROTATING BLADEHAZARD

Keep handsand feet clearof guard rings.Stop enginebefore servicing.

P/N 35168P/N 35168

CHECK

GEAR DRIVEGEAR DRIVE

CHECK

HOT

BELT DRIVE CLOCKWISE

COUNTERCLOCKWISE

LUBRICATION

LUBRICATION

LIFTING POINTLIFTING POINT

LUBRICATION

LUBRICATION

Figure 2. Operation and Safety Decals

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CA4HC TROWEL— GENERAL INFORMATION

CA4HC Trowel Familiarization

This walk-behind trowel is designed for the floating andfinishing of concrete slabs.

Take a walk around the trowel. Take notice of all the majorcomponents (see Figure 2) like the engine, blades, Standard orQuick Pitch™ handle, etc.

Read all the safety instructions carefully. Safety instructions willbe found throughout this manual and on the trowel. Keep allsafety information in good, readable condition. Operators shouldbe well trained on the operation and maintenance of the trowel.

Before using your trowel, test it on a flat watered down section offinished concrete that is free of any debris and other objects.

This trial test run will increase your confidence in using the troweland at the same time it will familiarize you with the trowel’scontrols. In addition you will understand how the trowel handlesunder actual conditions.

Engine

This trowel is available with an 4 HP HONDA gasoline engine.Refer to the engine owner’s manual for instructions regardingthe operation and maintenance of your engine. Please contactyour nearest Multiquip Dealer for a replacement should theoriginal manual disappear or otherwise become unusable.

Training

For proper training, please use the “TRAINING CHECKLIST”located in the front of this manual (Page 8). This checklist willprovide an outline for an experienced operator to provide trainingto a new operator

Blades

The blades of the trowel finish the concrete as they are rotatedaround the surface. This trowel comes equipped with fourcombination (8 in./203mm wide) blades per rotor equallyspaced in a radial pattern and attached to vertical rotatingshaft by means of the spider assembly.

Centrifugal Clutch

In the event of a trowel runaway condition (operator releasesthe handle), a centrifugal clutch will stop the engine andbring the trowel to a halt.

Drive System

Power is transferred from the engine to the gearbox input shaftvia a V-belt pulley drive system. The pulley engages using acentrifugal clutch. See Parts section of this manual.

Gearbox

The gearbox is located beneath the engine and transfers powerto the spider assembly. The gearbox controls the rotational speedof the trowel and is equipped with two shafts (input and output).

Guard Ring

This unit is equipped with a special rotating guard ring. It isdesigned to allow the operator to run the machine alongsidewalls, pipes, and obstructions without marring the surface.

CAUTIONCAUTIONCAUTIONCAUTIONCAUTIONNEVER attempt to lift the trowel by yourself. ALWAYS getthe assistance of another person to help lift the trowel .

Operate the CA4HC Trowel, tools and components in accordancewith the manufacturer's instructions. Use of any other tools forstated operation is considered contrary to designated use. Therisk of such use lies entirely with the user. The manufacturercannot be held liable for damages as a result of misuse.

Intended Use Spider

The vertical output shaft of the gearbox connects to a machinedhub called the spider. The spider has 4 arms that extend outwardthat are used for attachment of blades or other accessories.Remember as the gearbox output shaft rotates so does the spiderassembly.

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4

5

6

9

7

10

1520

1619

1817

11

14

1213

8

1

3

2

CA4HC TROWEL— CONTROLS AND COMPONENTS

1. Standard Handle – Employs a "starwheel" for manuallyadjusting blade pitch.

2. Foldable Quick Pitch Handle – Employs a lever handleto quickly adjust blade pitch. Handle folds for storage.

3. Throttle w/ "Kill" Switch – Uses an integrated "kill" switch.

4. Safety Switch – Centrifugal safety switch shuts the engineoff in a "runaway" situation. (Standard Handle)

5. Throttle Control Lever – Controls the speed of the engine.Move the hand lever towards the operator to increaseengine speed (high), away from the operator to decreaseengine speed (low).

6. Hand Grip/Handle Bar – When operating the trowel, placeboth hands on each grip to maneuver the trowel. Replacehand grips when they become worn or damaged.

7. Engine – Honda GX120 4 H.P. gasoline engine.

8. Pitch Adjust-Standard Handle - Turn clockwise orcounterclockwise to adjust blade pitch.

9. Quick Pitch Handle – Pivots back and forth to adjust bladepitch.

11. Trowel Arm – Provides attachment points for the blades. Ifthe blades show uneven wear patterns or some bladeswear out faster than others, the trowel arm may need to bereplaced.

12. Blades – This trowel is equipped with special combinationblades. Designed specifically for edging.

13. V-Belt Cover – Remove cover to gain access to the V-belt.

14. Lifting Bale – Provides lifting point for safe lifting of trowel.

15. Thumbwheel Adjuster – Use to adjust throttle cable.

16. Tee Handle – Loosen to fold handle.

17. Trigger Lock – Use to lock blade pitch position.

18. "Kill" Switch – Integrated into Quick Pitch Handle.

19. Throttle Lever Idle Detent – Pressed in, the detent willhold the lever away from the "kill" switch, allowing theengine to run at idle.

20. Quick Pitch Latching Bolt – Provides secure positioningof pitch handle into slotted pitch comb.

Figure 3. Controls and Components

Figure 3 shows the location of the basic controls or components,for the CA4HC TROWEL. Listed below is a brief explanation ofeach control or component

10. Guard Ring – Helps protect the rotating blades fromdamage and helps protect the operator from injury. NEVERput hands or feet inside the guard ring when engine isrunning. NEVER attempt to lift the trowel by the guard ring.

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Figure 4. Honda GX120 Engine Controls and Components

INITIAL SERVICING

The engine (Figure 4) must be checked for proper lubrication andfilled with fuel prior to operation. Refer to the manufacturer's enginemanual for instructions & details of operation and servicing. Theengine shown above is a HONDA engine, operation for othertypes of engines may vary somewhat.

1. Fuel Filler Cap – Remove this cap to add unleadedgasoline to the fuel tank. Make sure cap is tightenedsecurely. DO NOT over fill.

DANGER

CA4HC TROWEL— BASIC ENGINE

2. Throttle Lever – Used to adjust engine RPM speed (leveradvanced forward SLOW, lever back toward operatorFAST).

3. Engine ON/OFF Switch – ON position permits enginestarting, OFF position stops engine operation.

4. Recoil Starter (pull rope) – Manual-starting method. Pullthe starter grip until resistance is felt, then pull briskly andsmoothly.

7. Air Cleaner – Prevents dirt and other debris from enteringthe fuel system. Remove wing-nut on top of air filtercannister to gain access to filter element.

Operating the engine without an airfilter, with a damaged air filter, or afilter in need of replacement willallow dirt to enter the engine, causingrapid engine wear.

11. Oil Drain Plug – Remove this plug to remove oil from theengine's crankcase.

12. Dipstick/Oil Filler Cap – Remove this cap to determine ifthe engine oil is low. Add oil through this filler port asrecommended in Table 4.

13. Output Shaft – Drive power is transferred from the engineoutput shaft to the gearbox via a V-Belt pulley drive system.

6. Choke Lever – Used in the starting of a cold engine, or incold weather conditions. The choke enriches the fuelmixture.

10. Fuel Tank – Holds unleaded gasoline. For additionalinformation refer to engine owner's manual.

9. Muffler – Used to reduce noise and emissions.

8. Spark Plug – Provides spark to the ignition system. Setspark plug gap according to engine manufacturer'sinstructions. Clean spark plug once a week.

NOTE

Adding fuel to the tank should be done onlywhen the engine is stopped and has had anopportunity to cool down. In the event of afuel spill, DO NOT attempt to start the engineuntil the fuel residue has been completelywiped up, and the area surrounding theengine is dry.

5. Fuel Valve Lever – OPEN to let fuel flow, CLOSE to stopthe flow of fuel.

121311

3

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Figure 6. Throttle Idle-Run Position (Standard Handleshown)

CA4HC TROWEL— HANDLE ASSEMBLIES

Assembly and Installation

Before the trowel can be put into operation there are somecomponents that must be installed before the trowel can be used.This section provided general instructions on how to install thosecomponents. Instruction sheet p/n 21766 Rev A (StandardHandle), or Instruction sheet p/n 21849 Rev A (Folding QuickPitch Handle) provides further details for the handle assembly.

Handle Tube Installation (All Models)

1. Install the handle tube to the gearbox as shown in (Figure 5).The mounting hardware should be contained in the shippingcontainer.

Figure 5. Handle Tube Installation

Throttle Cable Connection (All Models)

Figure 7. Throttle Cable to Engine

2. Install the throttle cable to the engine as shown in Figure 7.

3. Adjust throttle cable at throttle lever on handle bar. (Figure 8)

1

2

3

4

1 Main Handle Tube2 Gearbox3 Nyloc Hex Nut4 Hex Screw

1 Throttle Cable2 Throttle Lever3 Run Position4 Idle Position

23

41

4

3

2

1

8

9

7

6

5

1 Adjuster Nut2 Cable Housing Clamp3 Swivel Stop Screw4 Swivel Stop Hole5 Cable Housing Edge6 Cable End7 Housing Clamp Screw8 Engine Idle Return Spring9 Cable Ferrule

The throttle cable length is presetand installed into the throttle leverat the factory.

NOTE

1. Set the throttle lever to the idle position (Figure 6) (lever awayfrom the operator).

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Pitch Cable Installation

1. Expose the pitch cable to maximum by adjusting the handlepitch to the "no pitch", counter-clockwise position (StandardHandle)(Figure 9). Pivot the pitch handle forward or nopitch for the folding Quick Pitch handle, (Figure 10).

Figure 9. Pitch cable (Standard Handle)

Figure 10. "No Pitch" Position (Quick Pitch Handle)

The Quick-Pitch™ handle is spring loaded, personal injuryor damage could result from improper handling orinstallation. Be careful when installing this component.

Considerable force may berequired when moving the Quick-Pitch™ handle forward orbackward.

CAUTIONCAUTIONCAUTIONCAUTIONCAUTION

NOTE

2. Remove any nuts from the pitch cable end. Insert the cablethrough the yoke eyelet, (Figure 11). Thread the conicalnut up to the eyelet first. Tighten the conical nut by hand toremove all the slack from the cable.

3. Thread the brass locking nut up to the conical nut. Use awrench to tighten the conical nut up against the yoke boss.This will lock the cable in place. Use a wrench to tighten upthe brass nut up against the yoke boss.

Figure 11. Pitch Cable to Yoke Install


23 41

1 Throttle Lever2 Throttle Cable3 Idle Detent4 Thumbwheel Adjuster

Figure 8. Throttle Cable Adjust

1

2

3

4

1 Yoke Eyelet2 Yoke3 Conical Nut4 Locking Nut

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Wanco, Yanmar












4

5

1

3

76

2

Quick Pitch™ Handle Assembly

If your CA4HC TROWEL is equipped with a folding upper handle(Figure 12), you will need to unfold and adjust the trowel handleto the upright position prior to operation. It was assembled at thefactory and shipped in its folded or stowed position.

Considerable force may berequired when moving theQuick Pitch™ handle forwardor backward.

2. When folding the handle assembly, remember to move theQuick Pitch™ handle forward first to avoid stretchingthe throttle cable.NOTE

DO NOT operate unless T-Handle Knob is securely in place.


Figure 12. Trowel Folded and Operational Positions


Unfolding the Trowel for Operation

1. Make sure that the Quick Pitch™ handle has beenattached to the upper handle bar and the pitch control cablehas slack. Remove the T-handle knob from the swing bolton the top side of the upper handle bar, by rotating theknob counter-clockwise.

2. Move the Quick Pitch™ handle toward's the operator'sposition and unfold the upper handle bar away from theengine into the upright position. Re-insert the swing boltso that it fits through the slot in the hinge plate. Turn the T-handle knob counter-clockwise securely to hold upperhandle bar in place.

1 Operational Position2 Upper Handle3 T-Handle Knob4 Quick Pitch Handle forward

when handle in folded position5 Folded Position6 Trigger Lock7 Quick Pitch Handle

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ALWAYS wear approved eye andhearing protection before operating thetrowel.

NEVER place hands or feet inside theguard rings while the engine is running.

CA4HC TROWEL— PRE-INSPECTION

Figure 13. Engine Oil Dipstick (Removal)

3. Insert and remove the dipstick without screwing it into the fillerneck. Check the oil level shown on the dipstick.

4. If the oil level is low (Figure 14), fill to the edge of the oil fillerhole with the recommended oil type (Table 3). Maximum oilcapacity is 0.48 quarts (.45 liters).

Reference manufacturer enginemanual for specific servicinginstructions.

Figure 14. Engine Oil Dipstick (Oil Level)

Before Starting

1. Read safety instructions at the beginning of manual.

2. Clean the trowel, removing dirt and dust, particularly theengine cooling air inlet, carburetor and air cleaner.

3. Check the air filter for dirt and dust. If air filter is dirty, replaceair filter with a new one as required.

4. Check carburetor for external dirt and dust. Clean with drycompressed air.

5. Check fastening nuts and bolts for tightness.

Engine Oil Check

1. To check the engine oil level, place the trowel on securelevel ground with the engine stopped.

2. Remove the filler dipstick from the engine oil filler hole(Figure 13) and wipe clean.

NOTE


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ALWAYS shut the engine down beforeperforming any kind of maintenanceservice on the trowel.

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CA4HC TROWEL— PRE-INSPECTION

Fuel Check

V-Belt Check

A worn or damaged V-belt can adversely affect the performanceof the trowel. If a V-belt is defective or worn simply replace the V-belt as outlined in the maintenance section of this manual.

Belt Guard Check

Check for damage, loose or missing hardware.

Blade Check

Check for worn or damaged blades. Check to see if one blade isworn out while the others look new. If this is the case there couldbe a blade pitch problem. Refer to the maintenance section ofthis manual for blade pitch adjustment procedure. Replace anyworn blades.

Centrifugal Clutch

This finisher model is equipped with a centrifugal clutch. Theunit automatically stops rotating when the handle is released.

1. Remove the gasoline cap located on top of fuel tank.

2. Visually inspect to see if fuel level is low. If fuel is low, replenishwith unleaded fuel.

3. When refueling, be sure to use a strainer for filtration. DONOT top-off fuel. Wipe up any spilled fuel.

2. If lubrication oil begins to seep out as the drain plug isbeing removed, then it can be assumed that the gearboxhas a sufficient amount of oil.

3. If lubrication oil does not seep out as the drain plug isbeing removed, fill with type ISO 680 (P/N 10139) gearboxlubricant oil until the oil filler hole overflows.

Figure 15. Gearbox

Gearbox Oil

1. Determine if the gearbox oil is low by removing the oilplug located on the side of the gearbox. This plug will bemarked by the "check" decal. See Figure 15. The correctlevel of the lubrication oil should be to the bottom of the fillplug.

DANGERDANGERDANGERDANGERDANGEREXPLOSIVE FUEL!Motor fuels are highly flammable and canbe dangerous if mishandled. DO NOTsmoke while refueling. DO NOT attempt torefuel the trowel if the engine is hot! orrunning.

CAUTIONCAUTIONCAUTIONCAUTIONCAUTIONDisconnect the spark plug wire from the spark plug andsecure away from the engine before performingmaintenance or adjustments on the machine.

1 Gearbox2 Oil Level Sight Glass

1

2

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3. Place the choke lever (Figure 18) in the "CLOSED " positionif starting a cold engine.

CA4HC TROWEL — INITIAL START-UPThis section is intended to assist the operator with the initialstart-up of the walk-behind trowel. It is extremely important thatthis section be read carefully before attempting to use the trowelin the field.

DO NOT use your trowel until this section is thoroughlyunderstood

Starting the Engine

1. Place the engine fuel valve lever (Figure 16) to the "ON"position.

Figure 16. Engine Fuel Valve Lever

Lifting the Trowel Onto a Slab

Extra care should be taken when lifting the trowel off the ground.Serious damage to the machine or personal injury could becaused by dropping a trowel.

Figure 19. Engine Choke Lever (Open)

Figure 18. Engine Choke Lever

5. Place the engine ON/OFF switch (Figure 20) in the "ON "position.

Figure 20. Engine ON/OFF Switch

NEVER attempt to lift this machine alone. NEVER lift thetrowel by the guard ring as it may rotate and cause injry.

Use only the manufacturer's approved lifting points. Thetrowel may be lifted at the center lifting bale by crane or otherlifting device of adequate capacity.

4. Place the choke lever (Figure 19) in the "OPEN" position ifstarting a warm engine or the temperature is warm.

2. Place the trowel's throttle lever (Figure 17) to the "IDLE"position.

Figure 17. Throttle Lever (Idle Position)


DO NOT attempt to operate the trowel until the Safety,General Information and Inspection sections of this manualhave been read and thoroughly understood.


IDLEPOSITION

THROTTLELEVER

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Figure 22. Throttle Lever (Run Position)

CA4HC TROWEL — INITIAL START-UP6. Grasp the starter grip (Figure 21) and slowly pull it out. The

resistance becomes the hardest at a certain position, corre-sponding to the compression point. Pull the starter grip brisklyand smoothly for starting.

Figure 21. Starter Grip

2. After the engine cools, turn the engine start/stop switch to the“OFF” position (Figure 23).

Figure 23. Engine ON/OFF Switch (OFF Position)

3. Close the fuel shut- off valve (Figure 24) by moving the fuelvalve lever to the OFF position.

Figure 24. Fuel Valve Lever (OFF Position)

Stopping The Engine

1. Move the throttle lever to the IDLE or SLOW position (Figure22) and run the engine for three minutes at low speed.

7. If the engine has started, slowly return the choke lever(Figure 19) to the OPEN position. If the engine has not startedrepeat steps 1 through 6.

8. Before the trowel is placed into operation, run the engine forseveral minutes. Check for fuel leaks, and noises that wouldassociate with a loose V-belt cover or component.

9. To begin troweling, move the throttle lever (Figure 22) towardthe "FAST" position.

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Figure 25. Maneuvering The Trowel

The figure illustrates a typical walk-behind trowel application.Practice maneuvering the trowel. The trick is to let the trowel dothe work.

NEVER place your feet or hands insidethe guard rings while starting or operatingthis equipment.

ALWAYS keep clear of rotating ormoving parts while operating thisequipment.

CAUTIONCAUTIONCAUTIONCAUTIONCAUTION CAUTIONCAUTIONCAUTIONCAUTIONCAUTION

CA4HC TROWEL — OPERATION

2. To maneuver the trowel, gently lift up on or press down onthe main trowel handle. To move the machine to the operator’sleft, lift up on the handle, to move machine to the right, pushdown on the handle.

The following steps are intended as a basic guide to machineoperation, and are not to be considered a complete guide toconcrete finishing. We suggest that all operators (experiencedand novice) read “Slabs on Grade” published by the AmericanConcrete Institute, Detroit, Michigan. Read the “Training”section of this manual for more information.

Maneuvering the Trowel

1. Get into the operator’s position behind the handle. With asecure foothold and a firm grasp on the handles slowlyincrease the engine speed until the desired blade speed isobtained.

3. The best method for finishing concrete is to slowly walkbackwards (Figure 25) with the trowel, guiding the trowelfrom side to side. This will cover all footprints on wet concrete.

4. Remember that if you let go of the trowel, just step away andlet the trowel come to a complete stop before trying to recoverthe trowel.

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Blades

Blades should be changed whenthey fail to finish concrete in asatisfactory manner.

CA4HC TROWEL — OPERATION - OPTIONS

Optional Float Discs (Pans)

These round discs (Figure 29) attach to the spiders and allow themachine to “float ” on “wet ” concrete. The disc design allows earlyfloating and easy movement from wet to dry areas. They are alsovery effective in embedding large aggregates and surfacehardeners.

Figure 29. Float Disk (Pan)

Figure 28. Combination Blade

NOTE

Pitching The Blades - Standard Handle

Adjust the blade pitch on the Standard handle, (Figure26) by turn the Pitch Adjust Wheel clockwise or counter-clockwise.

Figure 26. Standard Pitch Adjust

PITCH ADJUSTWHEEL Combo Blades

This trowel was equipped with combination type (Figure 28)blades as original equipment. These blades have been designedfor optimum performance in both the floating and finishing ofconcrete. These blades are versatile and should take care of mosttroweling needs.

Blades are a vital part of finishing concrete. This finisher has beendesigned to finish concrete and is built to stringent quality standardsout of the finest trowel steel. If you need replacement blades,consult your parts list in this manual for part numbers and orderthem from your Multiquip parts dealer or importer.

Pitching The Blades - Quick Pitch Handle

1. To pitch the blades upwards using the "Quick Pitch™"handle, (Figure 27) simply squeeze the trigger lockand pull the handle towards the operator. Pushing thehandle towards the engine will cause the blades to layflat.

Figure 27. Quick Pitch™ Handle

1 Quick Pitch Handle2 Blade Pitch Trigger Lock3 Increase Blade Pitch4 Decrease Blade Pitch

(Compresses spring inside handle tube)

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See the engine manual suppliedwith your machine for appropriateengine maintenance scheduleand troubleshooting guide forproblems.

MAINTENANCE SCHEDULE

Daily (8-10 Hours)

1. Check the oil level in the engine crankcase and gear box,fill as necessary.

2. Check V-belt.

Weekly (50-60 Hours)

1. Relube arms, thrust collar and clutch

2. Replace blades if necessary.

3. Check and clean or replace the engine air filter asnecessary.

4. Replace engine oil and filter as necessary, see enginemanual.

Monthly (200-300 Hours)

1. Remove, clean, reinstall and relube the arms and thrustcollar. Adjust the blade arms.

Yearly (2000-2500 Hours)

1. Check and replace if necessary the arm bushings, thrustcollar bushings and shaft seals.

2. Check pitch control cables for wear.

3. Adjust blade speed.

CA4HC TROWEL — MAINTENANCE

ALWAYS allow the engine to cool beforeservicing. NEVER attempt any maintenancework on a hot! engine.

NOTE

At the front of the book (Page 10) there is a “Daily Pre-OperationChecklist ”. Make copies of this checklist and use it on a dailybasis.



Figure 30. Incorrect Spider Plate Alignment

Trowel Arm Adjustment

Figure 31 illustrates the "correct alignment " for a spider plate(as shipped from the factory).

Use the following procedure to check and adjust trowel arms,and check for worn or damaged components when it becomesapparent that the trowel is finishing poorly or in need of routinemaintenance.

A level, clean area to test the trowel prior to and after is essential.Any unlevel spots in the floor or debris under the trowel bladeswill give an incorrect perception of adjustment. Ideally, a 5 x 5 Ft.(1.5 x 1.5 Meter) three-quarter inch (19 mm) thick FLAT steelplate should be used for testing.

Figure 30 illustrates, "incorrect alignment", worn spiderbushings or bent trowel arms. Check that the adjustment boltis barely touching (0.10" max. clearance) lower wear plate. Allalignment bolts should be spaced the same distance from thelower wear plate.

■ Are blades wearing unevenly? Is one blade completelyworn out while the others look new?

■ Does the machine have a perceptible rolling or bouncingmotion when in use?

■ Look at the machine while it is running; do the guard rings“rock up and down” relative to the ground?

Look for the following indications. Trowel arm alignment, wornspider bushings or bent trowel arms may the cause.

1. Place the trowel in a FLAT, LEVEL area.

2. Pitch the blades as flat as possible. The adjustment boltsshould all barely make contact with the lower wear plate onthe spider. If one is not making contact, adjustment will benecessary. (Item 1, Figure 30).

1 Adjustment Bolt2 Lower Wear Plate3 Surface4 "Dished" Effect on Finished Concrete

1

4 2

3

Refer to pages 21 and 22 for oil and lube procedures.

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S1

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a. Remove the zerk fitting and allen head screw desig-nated by the letter "S" (Figure 32). In addition, on theopposite side of the spider block there is another zerkfitting and allen head screw, remove both of thesecomponents.

Spider Removal

1. Once it is determined that an adjustment is required, removethe spider assembly from the gearbox shaft as follows:

Figure 32. Spider/Gearbox Removal

b. Lift the upper trowel assembly off the spider assembly.A slight tap with a rubber mallet may be necessary todislodge the spider from the main shaft of the gearbox.

Trowel Arm Removal

1. Remove the two remaining zerk fittings and allen headscrews from the spider assembly (Figure 33).

Figure 33. Trowel Arms Removal

Figure 31. Correct Spider Plate Alignment

1 Gearbox2 Trowel Arm3 Surface

4 Mounting Bar5 Blade6 Correct Alignment

1

2

4 56

3

1 Gearbox2 Gearbox Shaft3 Thrust Collar Bearing4 Thrust Collar5 Lower Wear Plate6 Spider Plate7 Zerk Cap8 Zerk Fitting9 Washer10 Allen Screw

1 Spider Plate2 Zerk Fitting3 Washer4 Zerk Cap

S

1

2

34

5

6

7

8

9

10

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Changing Blades Only

We recommend that all the blades be changed at the sametime. The machine may wobble or bounce if only some of theblades are changed at one time.

1. Place the machine on a flat, level surface. Adjust the bladepitch control to make the blades as flat as possible. Note theblade orientation on the trowel arm.

Before removing theblades, please note theorientation of the blade onthe trowel arm.

1. Remove the two bolts and lock washers that secure the bladeto the trowel arm. Remove the blade.

2. Using a wire brush, scrape all concrete particles and foreigndebris from the trowel arm.

3. Install the new trowel blade onto the trowel arm. Make sureblade is installed correctly, maintaining the proper orienta-tion for direction of rotation.

4. Reinstall the two bolts and lock washers that secure theblade to the trowel arm. Tighten both bolts securely.

5. Repeat steps 1 - 4 for all remaining blades.

NOTE


Re-Assembly

1. Clean and examine the upper/lower wear plates and thrustcollar. Examine the entire spider assembly. Wire brush anyconcrete or rust build-up. If any of the spider components arefound to be damaged or out of round, replace them.

2. Make sure that the bronze trowel arm bushing is not damageor out of round. Clean the bushing if necessary. If the bronzebushing is damaged or worn, replace it.

3. Reinstall bronze bushing onto trowel arm.

4. Repeat steps 2 -3 for each trowel arm.

5. Make sure that the spring tensioner is in the correct positionto exert tension on the trowel arm.

6. Insert all trowel arms with levers into spider plate (with bronzebushing already installed) using care to align grease hole onbronze bushing with grease hole fitting on spider plate.

7. Lock trowel arms in place by tightening the hex head bolt withzerk grease fitting and jam nut.

8. Re-install the blades onto the trowel arms.

9. Install stabilizer ring onto spider assembly.

10. Lubricate all grease points (zerk fittings) with premium"Lithum 12" based grease, conforming to NLG1 Grade #2consistency.

1. Remove the trowel blades from the trowel arm by removingthe two hex head bolts (Figure 34) from the trowel arm. Setblades aside.

Figure 34. Trowel Blades

2. Wire brush any build-up of concrete from all six sides of thetrowel arm. Repeat this for the remaining three arms.


Trowel Blade Removal

1 Blade2 Blade Arm3 Hex Head Bolt4 Lock Washer4 Remove From Arm

1

2

3

4

5

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Installing Pans Onto Finisher Blades

Refer to Figure 35 when installing pans onto finisher blades.

Figure 35. Pan Installation

3

2

41

1. Lift trowel just enough to slide pan under blades. Lowerfinisher onto pan with blades (item #1) adjacent to Z-Clips(item #4).

2. Rotate blades into position under Z-Clips. Ensure that theblades are rotated in the direction of travel when the machineis in operation or use the engine to rotate the blades intoposition.

3. Attach the blade tie-downs (item #3) to the far side of the Z-Clip brackets (item #4) with tie-down knobs (item #2) asshown in figure 35.

4. Check to make certain that the blade edges are securedunder the Z-Clips and the tie-downs are secured completelyover the edges of the blade bar before the machine is put backinto operation.

ALWAYS install pans either on the work area or on an areathat is next to and level with the work area. DO NOT lift thetrowel when the pans are attached.



Decommissioning Trowel/ComponentsDecommissioning is a controlled process used to safely retire apiece of equipment that is no longer serviceable. If the equipmentposes an unacceptable and unrepairable safety risk due to wearor damage or is no longer cost effective to maintain, (beyond life-cycle reliability) and is to be decommissioned, (demolition anddismantlement), the following procedure must take place:

1. Drain all fluids completely. These may include oil, gasoline,hydraulic oil and antifreeze. Dispose of properly in accor-dance with local and governmental regulations. Never pouron ground or dump down drains or sewers.

2. The remainder can be brought to a salvage yard or metalreclamation facility for further dismantling.

1 Blade Assembly2 Knob, Tie-down Z-Clip Pans3 Tie-down, Blade4 Z-Clip, PanTo o

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CA4HC TROWEL — TROUBLESHOOTING (TROWEL)

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CA4HC TROWEL — TROUBLESHOOTING (ENGINE)

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Wanco, Yanmar











operation manual to order go to discount … · 1. the vibration level indicated is the maximum rms...

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