Troy-Bilt 630CN User Manual

O TRO_ BILT

Operator's Manual

Rear-tine Tiller Models

630Cn Tuffy_
634Fm BroncoTM

634Bm Super BroncoTM

Model 634B Shown

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

WARNING: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable
local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of
California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws.
Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or
contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

TROY-BILT LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

PRINTEDINU.S.A. FORM NO. 770-10594B

11/5/02

TABLEOFCONTENTS

Content Page

CallingCustomerSupport.......................................................................................................2

Safety......................................................................................................................................3

Assembly................................................................................................................................6

FreaturesandControls............................................................................................................10

Operation................................................................................................................................12

Maintenance...........................................................................................................................17

Off-SeasonStorage.................................................................................................................21

Troubleshooting......................................................................................................................22

Parts List ................................................................................................................................23

WarrantyInformation..............................................................................................................BackCover

FINDINGMODELNUMBER

This Operator'sManualisan important partof your newRear-tineTiller. It will helpyou assemble,prepareandmaintain the unitfor
best performance. Pleasereadand understandwhat it says.

information from it inthespace providedbelow.This information isvery importantif you needhelpfrom our Customer
Beforeyoustart assemblingyournew equipment,pleaselocatethe model plateon the equipmentand copythe

Support Departmentor an authorizeddealer.

You can locatethe model numberby lookingon the rearsurface of the tine shield.A sample model plateisexplainedbelow. For
future reference,pleasecopy the modelnumber and theserial numberof the equipment inthe spacebelow.

Copythe model numberhere:

Copythe serial numberhere:

O TRII_BILT • _."__-_ _. _

www.troybilt.com CLEVELAND,OH44136

• 866-840-648_

330-558-7220

ENGINEINFORMATION

Theengine manufacturer is responsiblefor all engine-related issueswith regardto performance,power-rating, specifications,
warrantyand service. Pleasereferto the enginemanufacturer's Owner's/Operator'sManualpackedseparatelywith your unitfor more

information.

CALLINGCUSTOMERSUPPORT

If you have difficulty assemblingthis product or haveanyquestionsregarding thecontrols, operationor maintenanceof this unit,
pleasecall the CustomerSupport Department.

Call1- [phone] or 1- [phone] to reacha Customer Support representative.Pleasehaveyour unit's
model numberandserial number readywhenyou call. Seeprevioussection to locatethis information. You will be

askedto enterthe serial

SECTION1: SAFETY

Thismachinemeetsvoluntarysafetystan-
dardB71.8-1996, whichissponsoredbythe
OutdoorPowerEquipmentInstitute,Inc.,
andis publishedbytheAmericanNational

StandardsInstitute.

WARNING

The engine exhaust from this productcontains
chemicals known to the State of California to

cause cancer, birth defects or other reproduc-

SafetyAlertSymbol

in this manual and on the unit to alert

This is a safety alert symbol. It is used

you to potential hazards. When you
see this symbol, read and obey the
message that follows it. Failure to obey

safety messages could result in

persona I injury or property damage.

ForwardClutchO_

DepthRegulator

ReverseClutchControl

(Models634F/634B)

TineHoodFlap

/

(SRT)

DrivePin

Figure1-1: Tillerfeaturesandcontrols(5.5HPModelshown).Seeseparate
EngineOwner'sManualtoidentifyenginecontrols.

Training

_ _ 1., Carefully readthis Own-

"_,_/,_ ers Manual.the separate

EngineOwner'sManual

andany other literature you may receive.
Bethoroughly familiar withthe controls

andthe proper use ofthe tiller and its en-
gine.Know howto stop the unitand disen-

gagethe controls quickly.

2. Neverallow childrento operatethetiller.
Neverallow adults to operatethe tiller

without proper instruction.

3. Keepthearea of operationclear of all
persons,particularly children and pets

4. Keepin mindthat the operator or useris

responsiblefor accidents or hazardsoc-
curring to other people,their property,and
themselves.

Preparation

1.Thoroughly inspect the areawherethe

tiller isto be usedand removeall foreign
objects.

2. Be sure all tiller controls are released

andboth wheelsare in theWheelDrive po-
sition before starting the engine.

3. Donot operatethetiller without wearing
adequateouter garments. Avoid loosegar-

ments or jewelry that could getcaught in
moving parts.

4. Do not operatethe tiller when barefoot
or wearing sandals, sneakers,or hghtfoot-
wear.Wearprotective footwear that wi
improve footing on slippery surfaces,

5. Donottill near underground electric ca- 7. Nevermakeadjustmentswhenengine_s
bles. telephone lines, pipes or hoses.If in running (unless recommended oy manu-

doubt contact your telephoneor utility facturer).
company.

6. Warning: Handlefuel with care: it is Operation
highly flammableand its vaporsare explo-

sive.Takethe following precautions:

n. Storefuel in containersspecifically

designedfor this purpose.

I]. Thegascapshallneverberemovedor

fueladdedwhiletheengineisrunning.
Allow theengineto coolfor several

minutesbeforeaddingfuel.

_. Keepmatches, cigarettes, cigars.

ptpes,openflames and sparksaway
from the fuel tank and fuel container.

d. Fillfuel tank outdoors with extreme

care.Neverfill fuel tank indoors. Use

a funnel or spou[ to preventspillage.

e. Replaceall fuel tankand container

caps securely.

f. If fuel is spilled,do not attempt to

start the engine,but move the ma-
chineawayfrom the areaofsp_llage

and avoid creating any source of ig-

qition until fuel vapors havedissi-
pated.

1. Do not put hands orfeet nearor under
rotating parts

2. Exerciseextremecaution when on or
crossing gravel drives,walks, or roads.

Stayalertfor hidden hazardsor traffic. Do
not carry passengers.

3.After striking a foreign object, stop the
engine,removethe wire from the spark

plug wire and prevent itfrom touching the
spark plug. Thoroughly inspectthe ma-

chinefor any damageand repair the dam-
agebefore restarting and operatingthe

machine.

4. Exercisecautionto avoid slippingor fall- If indoubtaboutthetilling conditions,al- 24. Do not touch engine parts which may

ing.

5. If the unit should start to vibrate aonor-
really,stop the enQne.disconnect the

spark plug wire and prevent it from touch-
ing the spark plug,and checkimmediately
for the cause. Vibration is generallya
warning of trouble.

B.Stopthe enQhe, disconnectthe spark

plugwire and prevent it from touching the

spark plug, whenever you leavethe oper-
atingposition, beforeuncloggingthe trees.
or when making any repairs, adjustments
or inspections.

7. Takeall possible precautionswhenleav-

ing the machine unattended. Stop the en-
gine. Disconnectthe spark plug wire and
move it awayfrom the spark plug. Besure
that both wheelsare inthe Wheel Drive po-

sition.

8. Beforecleaning, repairing, or inspect-

ing, stop the engineand makecertain all
mowng parts havestopped. Disconnect
thespark plug wire and prevent itfrom
touching the spark plug to preventacci-
dentalstarting.

9. Theflapon the tine hoodmust bedown

when operatingthetiller.

tO. Neverusethetiller unless proper

guards, plates, or other safety protective
devicesare in place.

11. Donot run the engine m an enclosed

area. Engineexhaust contains caroon
monoxide gas. a deadly poison that is

odorless, colorless, and tasteless.

12. Keepchildren and pets away.

13.Neveroperatethetiller underengine

powerif the wheels arein the Freewheel
position.Inthe Freewheelposition, the

wheelswill not hold the tiller backand the
revolving Linescould propelthetiller rapid-

ly,possibly causingloss ofcontrol. Always
engagethe wheels with the wheel drive
pins in the WheelDrive position before
starting the engine or engagingthe

tines/wheelswith the Forward ClutchBail
(all models_or the ReverseClutchcontrol

(Models 634F/634Bonly).

14. Beaware that the tiller may unex-

pectedlybounceupwardorjumpforward

if thetines shouldstrike extremelyhard
packedsoil, frozenground,or buriedob-
stacleslike large stones, roots,or
stumps.

waysusethefollowingoperatingprecau- behotfrom operation.Letparts cooldown
tionsto assistyouinmaintaining control sufficiently.

ofthetiller:

a. Walk behindandto oneside ofthe

tiller, usingonehandonthe handle

barsRelax yourarm, but usea
securehandgrip.

b. Useshallower depthregulator

settings,workinggraduallydeeper
with each pass.

c. Useslowerenginespeeds.

d. Clearthetilling area ofall large

stones,rootsorotherdebris.

e. Avoidusingdownwardpressureon

the handlebars.If needbe. use

slightupwardpressureto keep the

tines from diggingtoodeeply.

f. Beforecontactinghardpackedsoil

at the end ofa row.reduceengine
speedandlift thehandlebarsto

raise the tines outof the soil.

g. Inanemergency,stopthetinesand

wheels byreleasing whichever

clutchcontrolis engaged.Do not
attemptto restrainthetiller.

15. Donot overloadthe tiller's capacity by
attempting to till too deeplyattoo fast a

rate.

16. Neveroperatethe tiller at hightrans- esare presentsuchashotwater andspace
port speeds on hard or slippery surfaces

Look behindand usecarewhen backing
up

17. Do notoperatethetiller ona slopethat
is too steep for safety.When on slopes,
slow down andmakesure you havegood

footing. Never permit the tiller to free-

wheeldown slopes.

18. Neverallow bystanders nearthe unit.

19. Onlyuseattachments andaccessories

that are approvedby the manufacturer o1
the tiller.

20. Usetiller attachmentsand accessories
when recommended.

21. Neveroperatethe tiller without good
visibility orlight.

22. Neveroperatethe tiller ifyou aretired:
or underthe influence ofalcohol, drugs or

medication.

23. Operatorsshallnottamper with the en-
gine-governor settings onthe machine:

the governor controls the maximum safe

operatingspeedto protectthe engine and
all moving parts from damagecaused by
overspeed. Authorized serviceshall be
sought if aproblem exists.

25. Pleaseremember:Youcanalwaysstop
thetines and wheels by releasingthe For-

ward Clutch Bailor on Models 634Fand
634B the ReverseClutchcontrol. _which-

evercontrol is engaged), or by movingthe
Egnitionswitch and/orthrottle control lever
on the engineto "OFF"or "STOP".

26. To load or unloadthe tiller, seethe in-
structions in Section4 of this Manual.

27. Useextreme caution when reversing
or pulling the machinetowards you.

28. Start the enginecarefullyaccording to
instructions and with feet well away from

thetines.

29. Neverpickupor carry amachinewhile
theengine is running.

MaintenanceandStorage

1. Keepthe tiller, attachmentsand acces-
sories in safe working condition.

2. Checkall nuts bolts, and screws at
ervalsfor proper tightness to ee sure the

equipment is insafe workingcondition.

3. Neverstore thetiller with fuel in the fuel
tank insidea buildingwhereignition sourc-

heaters,furnaces, clothesdryers, stoves,
electric motors, etc.L Allow the engineto
COOlBeforestoring the unit in any enclo-

sure.

4. To reducethe chancesof a fire hazard.
keepthe enginefree of grass, leaves,or ex-

cessivegrease.

5. Storegasolinein acool. well-ventilated
area.safelyaway from any spark- or
flame-producing equLpment. Storegaso-
line in an approvedcontainer, safely away

from the reachof children.

6. Refedto the Maintenancesections of
this Manual and the separateEngineOwn-

er'sManualfor instructions if the unit isto
ee stored for an extendedperiod

7. Neverperform maintenancewhilethe
engineis runmng orthe sparkplug wire is
connected,exceptwhen specifically in-

structed to do so.

8. Ifthefueltankhastobedrained dothis
outdoors.

Decals

Foryour safety and the safety of others, vari-
ous safetyand operationa!decalsare located

on your unit (seeFigure1-2).

Keepthe decalscleanand legibleat all times.
Contactyour localservicedealerorthe factory
for replacementsifanydecalsare damagedor
missing.

Referto the PartsList pagesinthis Manualfor
decallocations, descriptions and part num-

bers.

ForwardClutchBail

StartingStabilization

Message(onengine)

Figure 1-2: Locationof safely and operatingdecals(5,5 HP Model shown),

ReverseClutchControl

OperatingInstruction

(Models 634F/634B)

WarningMessages

HotSurfacesWarning

OperatingSymbols

Var_us_bds(shownhere,w_hworddesk)

I-'-I ltl R

maybeusedonthe_llera_dengine.
NOTFzYeur_n'_r_thavealid_symb_.

CHOKE CHOKE REVERSE _ON OFF ROTATINGTINES

,K÷ ENOAOE.

FAST SLOW STOP TILLERDIRECTION LEVERDIRECTION

TO AVOIO SERIOUS INJURY:

• READTHEOWNER'SMANUAL.

• KNOWLOCATIONSAND FUNCTIONSOFALLCONTROLS.

• KEEPALLSAFETYDEVICESANDSHIELDSIN PLACEAND WORKING.

• NEVERALLOWCHILDRENORUNINSTRUCTEDADULTSTOOPERATETILLER.

• SHUTOFFENGINEANDDISCONNECTSPARKPLUGWIRE BEFOREMANUALLYUN"

CLOGGINGTINESORMAKINGREPAIRS.

• KEEPBYSTANDERSAWAYFROMMACHINE.

• KEEPAWAYFROMROTATINGPARTS.

• USEEXTREMECAUTIONWHENREVERSINGOR PULLINGTHEMACHINETOWARDS

YOU.

BAIL

BAIL

DISENGAGED

SECTION2: ASSEMBLY

WARNING: To prevent
personalinjury or property

damage,do not start the engine
until all assemblysteps are
completeandyou haveread
and understandthe safety and
operatinginstructions in this

manual.

INTRODUCTION

Carefullyfollow these assemblysteps to
correctly prepareyour tiller for use. It _s

recommendedthat you readthis Section
in its entirety before beginning assembly.

NOTE: Various tiller models are

presented in this Manual. Use only the
information appropriate for your tiller LoosePartsList(contactyourlocaldealer

model, orthe factory itemsare missing or dam-

ASSEMBLYSTEPS

STEP 1: UNPACKING INSTRUCTIONS

NOTE:While unpackin0, do not severely
bendany control cables.

1.Thetiller weighs approximately133 lbs.
Donot attempt to removeit from the ship-
ping platform until instructed to do so in

these Assembly steps.

2. Removeanypackagingmaterialfrom

the carton. Removeany staplesfrom the

bottom ofthe carton and removethe car-

ton from the shipping platform.

3. Removeall unassembledpartsand the
separatehardwarebagfrom the carton.
Checkthat you havethe items listed in the

aged).

INSPECTUNIT

Inspectthe unitand cartonfor damage tm-

mediatelyafter delivery. Contactthe carri-
er (trucking company) if you find or

suspectdamage. Inform them of thedam-
ageand requestinstructions for filing a

claim. Toprotect your rights, put your
claim in writing and mail a copyto the car-

rier within 15 days after the unit hasbeen
delivered.Contact Troy-Bilt LLCit you

needassistancein this matter.

TOOLSMATERIALSNEEDED

(11 3_8"open-endwrench-
(2) 7/16"open-end wrench-
(.2_ 1/2" open-end wrench*
(.2_ 946"open-end wrench-

(1) Largead Jstablewrench

_Models634F/634Bonly)
(.11 Scissors totrim plastic ties
(1) Ruler (for belt tension check_

Ill Block of wood (to support tiller when

removing wheels)
(1) Tire pressure gauge_formodelswith

pneumatictires_
111 Cleanoil funnel

Ill Motor oil Refertothe EngineOwner's

Manualfor oil specificationsand

quantityrequired.

* Adlustable wrenches may Deused.

NOTE: Use the screw length template

(Fig.2-1) toidentify screws

LoosePartsList

Qty. Description

1 HandlebarSupport (seeA, Fig. 2-2_
1 HandlebarAssembly(see K, Fig.2-2)

Hardwarebag contents:

1 Slotted hd. screw #10-24 x 2'
1 Hex bd.screw 1/4-20 x 1-1/4
6 Hex hd.screw 5/16-18x 1-1 2"
2 Hex hd.screw. 3/8-16 x 3/4
2 FlatWasher.3/8°

6 Split Iockwashe_ 5/16_
1 Hex Iocknut. 1/4"-20

8 Hex nut. 5/16"-18
1 Hex nut #10-24
2 Hex Iocknut.3_8"-16

1 Spring, cable (see W, Fig.2-5'_
1 Bracket.forward clutch cable

(seeP,Fig.2-4_

2 Lockwasher 3/8
2 *Self-tapping screw. 1/4-20 x 1/2

1 *Bracket reverseclutch cable

Model 634F& 634B only

IMPORTANT:Motor oil must beaddedto

the enginecrankcasebefore the engine is

started. Followthe instructions inthis
Sectionand intheseparateEngine

Owner'sManual.
NOTE:LEFTandRIGHTsidesofthetiller sion to raise one wheelabout 1" off the

are as viewedfrom the operator's position ground.
behind the handlebars.

m

Figure2-1: Toidentifylengthofscrews,place
screwontemplateasshownandmeasuredis-
tancebetweenbottomofscrewheadandtipof

screw,

STEP 2: ATTACH HANDLEBAR

1. Looselyattachthe legs of the handlebar
support (A, Fig.2-2) to the inner sides of
thetiller frame using two 3/8"-16x 3/4"hex
hd. screws (B), 3/8"flat washers(C), 3/8"
lock washers (GG',and 3/8"-16 hexlock-
nuts (D',

2. Therearethree heightadjustment holes
in the two handlebarsupport brackets (.E
and E Fig. 2-2). Usea setting that will po-
sition the handlebarsat approximately

waist levelwhen the tines are3"-4" into the
soil. Looselyattachthe support brackets

to the handlebarsupport (.A_using two
5/16"-18x 1-1/2" screws (G),5/16" split
Iockwashers(.H)and5/16"-18 hexnuts [I).
NOTE: If a support bracketwill not move
loosenattaching screw (J) and nut.

3. Attach the handlebarassembty (.K_to
the handlebarsupporl (A) usingfour 5.
16"-18x 1-1/2" screws (.G_,5/16"split
Iockwashers(H)and5/16"-18 hexnuts (I).
Tightenthe four screws securely

4. Tighten all handlebarmounting hard-
waresecurely.

STEP3: MOVE TILLER OFF

Toroll the tiller off the shipping platform.
put the wheels in freewhee asfollows:

1. Placeasturdy block underthetransmis-

Fig. 2=3: Wheel in FREEWHEELposition

STEP4: INSTALL FORWARD
CLUTCH CABLE

1. Attach theforward clutch cablebracket
(P,Fig.2-4) to the handlebarsupport AI

with a 1/4"-20x 1-1/4"hexhd. screw (R)
and 1/4"-20hexIocknut (S).Tighten se-
curely.

2. Carefullyunwrapthe forward clutch ca-
ble (cable without anattached knob, from

its shipping position and slidethe thin ca-
ble wire (T,Fig.2-4) intothe slot in the ca-

ble bracket. Pushthe cableconnector(U,
Fig.2-4) upthrough the holein the bracket
until the groove in the connector snaps
into place.

3. Insertthe #10-24 x 2" slotted hd. screw
(V,Fig.2-5) downthrough the hookedend

of the cablespring (W) until the screw

Fig.2.2:Atlachhandlebar(5.5 HpMOde!shown), threads extendthr0ugh the spring.

2. Removethe hairpin cotter (L, Fig.2-3)
and wheel drive pin (M) from the wheel

hub (0) and wheelshaft (N).

3. Slidethe wheelfully inwardonthewheel
shaft (N, Fig.2-3). Reinstall the wheel
drive pin (M) through the wheelshaft only
(not through thewheel hub). Securethe
wheeldrive pin with the hairpin cotter (L),

pushingthe hairpincotter in asfar asit will
go. Thewheelshould now spin freely

(freewheel) on the wheelshaft. Repeat
with the other wheel.

4. Usethe handlebarto rollthe tiller to a
flat area.

IMPORTANT:BeforeStartingtheengine,
thewheels must be placedin the WHEEL Fig.2-4. Installingforwardclutchcablebracketandcable.
DRIVEposition (pins through wheel hubs

andwheelshaft). This procedureis
described in WheelDrivePinsin Section3.

4.Threadthe#10-24 hexnut (Z, Fig. 2-5)

halfwayonto the screw (V).

5. Threadthe screw IVI into thecable ad-
juster (X).

6. Hookthe cable spring (W, Fig.2-6) into
theV-shapedbend in the ForwardClutch

Bail

7. Checkfor correct tension onthe forward
drive belt bytaking two measurements of

thecablespring, as follows:
a. With the ForwardClutch Bail (Y,Fig.2-

6/in an open(released)position, measure
thelength ofthecablespring (W from the

outermost coil to the outermost coil.

D.SqueezetheForwardClutch Bailagainst
the handlebar(seeFig. 2-7_and re-mea-
surethe spring length, Thebelt tension is

correct if this second measurementis be-
tween 1/16"to 34 6"longer than thefirst

measurement. If so.turn the hexnut (Z.

Fig.2-7) tightly againstthe cable adjuster
(X_while preventingthe cable adjuster
from turnmg.

c. Ifthe spring length is incorrect, you
mustadjust the cable tension asdescribed

in Checkingand Adjustin_ ForwardDrive Forward Clutch Bail.

Belt Tensionin Section 5. Incorrect cable
tension can result in belt slippage Icable

tension too IooseJ.or unintentional tine
movement when the clutch bailis in Neu-

tral _cabletensiontoo tight}

Wm

Zm

X--

Fig. 2-7: Tocheckforwardbelt tension, lake two measurementsof the length ofthecoilsin the
spring- first with thebail open, then withthe bail held againstthe handlebar,

STEP 5: INSTALL REVERSE CLUTCH
CABLE (MODELS 634F & 634B ONLY)

1. Unwrapthe reverseclutch cable(CC.
Fig.2-8 and Fig.2-9_from itsshipping po-
sition and route it up to the handlebar. Be

surethat the cableis routed beneaththe

2. Usingthe two self-tapping screws (AA,
Fig.2-8) securethe reversecable mount-
ing bracket (BB)to the handlebars as

show_

3. Insertthe cable(CC,Fig.2-8)throughthe
slotinthecablebracketandpositiontheflat

sideofthe threadedassemblynextto the

flat side ofthe hole. Slidethe hexnut (DD/

up the cableandtighten it securely.

4. Fastenthe reverseclutchcableto the
leftsidehandlebarwitha cabletie (EE,Fi_

2-9L

5. Testthefunction of the reverseclutch by
pulling out andreleasingthe cable knob.
Theknob should return to its neutral posi-

tion (resting againstbracketL If it doesn't.

contact your localdealer or Troy-Bilt LLC

for technical assistance.

CC

Fig. 2-8: Install reverse cable bracketand
reverseclutch cable,

Fig. 2-5: Cable
springand
adjuster.

Fig. 2-6:Attachforward

clutch cablespringto

forwardclutchbail.

Fig, 2-9: Routereverseclutch cable (CC)as
shown, Attachwith cable tie (EE).

31bY I_: UI'IEUK LEVEL UI-
Thetransmission wasfilled with gearoil at

thefactory.However,youshouldcheckthe
gearoil levelatthis time to makecertain it

is correct.
IMPORTANT:Donot operatethe tiller ifthe

gearoil levelis low. Doingso will result in
severedamageto thetransmission com-
ponents.

1. With the tiller on levelground, pullthe
Depth RegulatorLever(FF,Fig. 2-10) back
andthen all the way upuntil the lowest
notch in the lever is engaged.

2. Removethe oil fill plug(GG,Fig.2-11)
from the transmission housingcover and

locatethe main drive shaft situated inside
the housing.

3. Thegear oil levelis correct if the gear
oil is approximately halfwayup theside of

the maindrive shaft.

4. If the oil levelis low,add gear oil by re-
ferring to A. ToCheckthe Transmission

GearOil Level inSection 5.

_IbY I: AUU MUIUH UIL
Thetiller isshipped withoutoil in the en-

gine.
IMPORTANT:Do not start the enginewith-

outfirst adding motor oil. Severeengine
damagewill resultifthe engineis runwith-

out oil.

1. Referto the separateEngineOwner's
Manualfor engine oilspecifications and
capacities.

2. With the tiller on levelground, movethe
Depth RegulatorLever(FF,Fig.2-10) upor
down until the engine is level.

3. Add motor oil asdescribed in the En-
gine Owner'sManual.

4. Movethe Depth RegulatorLeverall the
way down until the highest notch is en-
gaged. This placesthetines in the"travel"
position, which allowsthe tiller to be
moved without thetines touching the
ground.

STEP8: CHECKHARDWARE

Checkall nuts andscrews for tightness.

STEP 9: CHECKAIR PRESSURE IN
TIRES (units with pneumatic tires)

Ontires equipped with air valves, check
theair pressure with atire gauge. Deflate
or inflate the tires equally to between15
PSIand20 PSI(pounds persquareinch).
Besure that both tires areinflated equally
or the unit will pull to one side.

Fig. 2-10: AdjustDepth RegulatorLever.

Fig.2-11:Removegearoilfill plug.

._ru.l_N i: his compie_esme assemoiysteps.
Beforeoperatingyour tiller, makesure you readthe
{ollowingsections in this Manual,aswell as the
separateEngineOwner'sManual:

• Section 1: Safety

• Section 3: Featuresand Controls

• Section 4: Operation

SECTION3: FEATURESANDCONTROLS

WARNING: Before
operatingyour machine,

carefully readand understand
all safety, controls and
operatinginstructions in this
Manual,the separateEngine

Owner's Manual,andon the
decalson the machine.
Failureto follow these
instructions canresult in

serious personal injury.

INTRODUCTION

This Section describesthe location and
function of thecontrols on your tiller. Re-

ferto the following Section,Operationfor
detailedoperating instructions.

Practiceusing these controls, with the en-
gine shut off, until you understandthe op-

eration ofthe controls and feelconfident
with each of them.

Forward

Reverse ClutchControl

(Models634F/634B)

DepthRegulator

Handlebar HeightAdjustment

Wheel Drive Pin

(oneachwheel)

ENGINE CONTROLS

Referto the enginemanufacturer'sEngine
Owner'sManual (included in the tiller liter-
ature package)to identify the controls on
your engine.

IMPORTANT:Thecontrol for stopping the
engine is located on the engine.

WHEEL DRIVE PINS

Eachwheel is equippedwith awheeldrive
pin (A, Figures3-2 and 3-3) that secures
thewheelto the wheelshaft (B). The
wheelscan be positioned in either a

WHEELDRIVEora FREEWHEELmode.

WARNING: Neverallow
eitherof thewheelsto bein the
FREEWHEELposition whenthe

engineis running. Always put
both wheelsin theWHEEL

DRIVEposition beforestarting
theengine.
Failureto comply could cause
loss of tiller control, property
damage,or personalinjury.

Beforestarting the engine,put both wheels
in the WHEELDRIVEposition byinserting
thewheel drive pins through the wheel
hubsand the wheel shaft. Doing so

"locks" the wheels to the wheel shaft,
causingthe wheelsto turn wheneitherthe

Figure3-1:Tillerfeaturesandcontrols(5. HPModelshown).SeeS_eparateEngineOwner's
Manualtoidentifyenginecontrols.

Forward Clutch Bail (all models) or the Re-
verseClutch Control (Models 634F and
634B) is engaged.

Usethe FREEWHEELmode only whenthe
engineis notrunning. In FREEWHEEL,the
wheeldrive pins are placedonly through
theholes in the wheel shaft (not the wheel
hubs), thus allowing the wheels to turn

freely when you manuallymovethe tiller.

Toplacethe wheels in WHEELDRIVEor
FREEWHEEL:

1. Stopengine,disconnectsparkplugwire

from spark plugandallowengineto cool.

_ ARNING: Do not place

2. Raiseonewheelabout one inch offthe
ground and placea sturdy support under

thetransmission.

3. Removehairpin cotter (C,Figures3-2
and 3-3) from wheel drive pin (A).

4. FORWHEELDRIVEMODE(Figure3-2):
Slide wheel outward and align holes in

tiller on its side whenchanging

wheeldrive positions. Doingso
could result in gasolineleaking

from thefuel tank.

Failureto follow this instruction
could result in personal injury

or property damage.

10

Figure3-2: WHEELDRIVE position.

wheelhub (D, Figure3-2) and wheel
shaft (B). Insert wheel drive pin (A)
through wheel hub (D)and wheel
shaft (B). Securewheeldrive pin with hair-
pin cotter (C) by pushing hairpin cotter in
asfar as it will go. Repeatwith the other
wheeland then remove thesupport from

beneaththe transmission.

5. FORFREEWHEELMODE( Figure3-3):
Slidethewheelinwardand insertthewheel

drive pin (A, Figure3-3) onlythrough the
hole in the wheel shaft (B). Securewheel
drive pinwith hairpincotter (C) by pushing
hairpin cotter in asfaras it will go. Repeat

for the other wheel and then remove the
support from beneaththe transmission.