Troy-Bilt 630C-Tuffy, 634A-Super Bronco Operator's Manual

T_RO BILT_

Operator's Manual

Rear-tine Tiller Models

630C Tuffy

634F BroncoT.

Model 634A Shown

IMPORTANT: Read safety rules and instructions carefully before operating equipment.

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-BiltLLC,P.O.BOX361131CLEVELAND,OHIO44136-0019

PRINTEDIN U.S.A. FORMNO. 770-10594D

11/19/03

TABLEOFCONTENTS

Content Page Content Page
Customer Support 2 Maintenance 17
Safety 3 Off-season Storage 21
Assembly 6 Troubleshooting 22

Features and Controls 10 Parts List 23
Operation 12 WarrantyBackCover

FINDINGMODELNUMBER

This Operator's Manual is an important part of your new lawn tractor. It will help you assemble, prepare and maintain the
unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, please locate the model plate on the equipment and

copy the information from it in the space provided below. A sample model plate is also given below. You can

locate the model plate by looking at the rear of the tine shield. This information will be necessary to use the
manufacturer's web site and/or help from the Customer Support Department or an authorized service dealer.

Z Z

Copy the model number here:

ZZZ ZZZZZ ZZZZZZ Z Z ZZ

'mJ_._JN_'_e" TROY-BILT LLC

H_._ar _=wm_m P.O. BOX 361131

www.troybilt.com CLEVELAND, OH 44136

_, 1-800-520-5520

330-558-7220

Copy the serial number here:

CUSTOMERSUPPORT

PleasedoNOTreturnthe unitto theretailer withoutfirstcontactingCustomerSupport.

If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of
this unit, you can seek help from the experts. Choose from the options below:

Visit troy-bilt.com for many useful suggestions. Click on Customer Support button and you
will get the four options reproduced here. Click on the appropriate button and help is

The answer you are

looking for could be just

I

, miTeuat_lme _Jolm] _e_eJlr Rb_e_eJ yea_S.

Service Locater

Nee_i J_cal a_i_fa=_?' _li_tk he/e T,_fh_{

•_R_h_ize_B sewi_e celklei_ J_ V_Y_H ,_e_.

Manuals OnMine
Nee(J a malarial au_d'el U_altsmist?DewJ_lead

The engine manufacturer is responsible for all engine-related issues with regard to
performance, power-rating, specifications, warranty engine
manufacturer's Owner's/Operator's Manual, packed separately with your unit, for more

information.

and service. Please refer to the

SECTION1: SAFETY

Thismachinemeetsvoluntarysafetystan,
dardB71.8-1996, whichissponsoredbythe
OutdoorPowerEquipmentInstitute,Inc.,
andis publishedbythe AmericanNational

StandardsInstitute.

WARNING

Theengineexhaustfromthisproductcontains
chemicalsknowntotheStateofCaliforniato

causecancer,birthdefectsor otherreproduc-

ForwardClutchB_

ClutchControl

(Models634FJ634A)

Depth Regulator

TineHoodFlap

_i&, in this manual and on the unit to alert

personal injury or property damage.

and anyother literatureyou may receive. 4. Do not operatethe tiller when barefoot

Bethoroughly familiar with the controls or wearing sandals,sneakers,or light foot-

andthe proper use of the tiller and its en- wear.Wearprotective footwear that will nition until fuel vapors havedissi-
gine.Know howto stop the unit anddisen- improve footing on slippery surfaces.
gagethe controls quickly.

2. Neverallow childrento operatethe tiller.
Neverallow adults to operatethe tiller
without proper instruction.

3. Keepthe area of operation clearof all
persons,particularly children and pets. highly flammable and its vapors areexplo-

4. Keepin mind that theoperatoror useris sive. Takethe following precautions:
responsiblefor accidents or hazardsoc-

curring to other people,their property,and designedfor this purpose.

themselves.

Preparation

1. Thoroughly inspect thearea wherethe

tiller is to be used and removeall foreign
objects.

2. Be sure all tiller controls are released

and bothwheelsare in the WheelDrive po-
sition beforestarting the engine.

This is a safety alert symbol. It is used

youto potential hazards. When you

see this symbol, read and obey the

message that follows it. Failure to obey

safety messages could result in

Figure1-1:Tillerfeaturesandcontrols.SeeseparateEngineOwner'sManualto
identifyenginecontrols.

Training 3. Do not operatethetiller without wearing

"_ @ 1. Carefullyreadthis Own- adequateoutergarments. Avoid loosegar-

er's Manual,the separate ments or jewelry that could get caught in

EngineOwner'sManual, moving parts.

5. Do nottill nearunderground electric ca- 7. Nevermakeadjustmentswhen engineis
bles, telephonelines, pipes or hoses.If n running (unless recommendedby manu-
doubt, contact your telephone or utility facturer).

company.

6. Warning: Handlefuel with care: it is Operation

a. Storefuel in containers specifically

b. Thegascapshall neverberemovedor

fueladdedwhiletheengineis running.
Allow the enginetocool for several

minutesbeforeaddingfuel.

c. Keepmatches,cigarettes,cigars,

pipes, openflamesand sparks away

from thefueltankandfuelcontainer.

d. Fillfuel tank outdoorswith extreme

care.Neverfill fuel tank indoors. Use
afunnel or spout to preventspillage.

dard-Rotating-Tines

(SRT)

DrivePin

e. Replaceall fuel tank and container

capssecurely.

f. If fuel is spilled, do notattemptto

start the engine,but movethe ma-
chineawayfrom the areaof spillage
and avoidcreating any source of ig-

pated.

1. Do not put handsor feet nearor under
rotating parts.

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

Stayalert for hiddenhazardsor traffic. Do
not carry passengers.

3.After striking aforeign object, stop the
engine,remove the wire from the spark
plug wire and prevent it from touchingthe
spark plug. Thoroughly inspect the ma-
chinefor any damageandrepairthe dam-
age beforerestarting and operatingthe

machine.

4.Exercisecautiontoavoidslippingorfall-

ing.

5.Iftheunitshouldstarttovibrateabnor-
mally,stoptheengine,disconnectthe

sparkplugwireandpreventitfromtouch-
ingthesparkplug,andcheckimmediately

for the cause. Vibration isgenerally a barsRelax yourarm, butuse a
warning of trouble, securehandgrip.

6. Stop the engine, disconnectthe spark
plugwire and preventitfrom touchingthe settings,workinggraduallydeeper

spark plug,whenever you leavethe oper-
atingposition,before uncloggingthetines, c. Useslowerenginespeeds.

or when makingany repairs, adjustments d. Clearthetillingarea ofall large
or inspections, stones,rootsorotherdebris.

7. Takeall possible precautions whenleav-

'rig the machineunattended. Stopthe en- the handlebars.If needbe, use
gine. Disconnectthe spark plug wire and slightupwardpressureto keep the instructions and with feet well awayfrom

move itawayfrom the spark plug. Besure

that both wheelsare inthe WheelDrive po-

sition.

8. Before cleaning,repairing, or inspect- raise thetines outof thesoil. MaintenanceandStorage

'ng, stopthe engine and make certain all g. Inanemergency,stop the tines and 1. Keepthe tiller, attachmentsand acces-
mowng parts havestopped. Disconnect wheelsby releasing whichever sories in safe working condition.

the spark plug wire and prevent it from
touching the spark plug to preventacci- clutchcontrolis engaged. Do not 2. Checkall nuts, bolts, and screws at

dentalstarting.

9. The flap onthe tine hood must bedown

when operating the tiller.

10. Neveruse the tiller unlessproper

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

11. Do not run the engine in an enclosed

area. Engineexhaust contains carbon
monoxide gas, a deadlypoison that is

odorless, colorless, and tasteless, is too steepfor safety. Whenon slopes,

12. Keepchildren and pets away.

13. Never operatethe tiller underengine

powerif the wheels are in the Freewheel
position.In the Freewheelposition, the

wheelswill not holdthe tiller backandthe
revolving tinescould propelthe tiller rapid- that are approved by the manufacturerof

ly, possiblycausing loss of control. Always the tiller.
engagethe wheels with the wheeldrive

pins nthe Wheel Drive position before
starting the engineor engagingthe

tines/wheelswith the Forward Clutch Bail

(all models) or the ReverseClutchcontrol
(Models 634F/634Aonly).

14. Be aware that the tiller mayunex-

pectedlybounceupwardorjumpforward
if the tinesshouldstrikeextremely hard
packedsoil, frozenground, or buried ob-
stacleslike large stones,roots,or
stumps.

If indoubtaboutthetilling conditions,al- 24. Do not touch engine parts which may
ways usethe followingoperatingprecau- be hotfrom operation.Let partscool down
tionsto assistyouinmaintaining control sufficiently.

ofthe tiller: 25. Pleaseremember:Youcan alwaysstop

a. Walk behindandto oneside of the thetines and wheels by releasingthe For-

tiller, usingonehandonthehandle ward Clutch Bailor on Models 634F and

634A the ReverseClutchcontrol, (which-
evercontrol is engaged),or by movingthe

b. Useshallowerdepthregulator

with eachpass.

e. Avoidusingdownwardpressureon

tines fromdiggingtoo deeply.

f. Beforecontactinghardpackedsoil 29. Neverpickuporcarryamachinewhile

at the endof a row,reduce engine theengine _srunning.
speedand lift thehandlebarsto

attemptto restrainthe tiller, ervalsfor proper tightness to besure the

15. Do not overloadthe tiller's capacityby equipment is insafeworking condition.

attempting to till too deeplyattoo fast a 3. Neverstorethetiller withfuel in thefuel

rate. tankinsidea building whereignition sourc-

18. Neveroperatethe tiller at high trans- esare presentsuchas hot waterandspace

port speedson hard or slippery surfaces, heaters,furnaces, clothesdryers, stoves,

Look behind and use carewhen backing electric motors,etc.). Allow the engineto

up cool before storing the unit in anyenclo-

17. Do notoperatethetiller onaslopethat sure.

slow down and makesure you have good
footing. Never permit the tiller to free-

wheeldown slopes.

18. Neverallow bystanders nearthe unit.

19. Only useattachmentsand accessories

20. Usetiller attachmentsand accessories

when recommended.

21. Neveroperatethe tiller without good

visibility or light.

22. Neveroperatethe tiller ifyou aretired;

or underthe influence of alcohol, drugsor

medication.

23. Operatorsshall nottamper with the en-

gine-governor settings on the machine
the governor controls the maximum safe

operatingspeed to protect the engine and

all moving parts from damagecaused by

overspeed. Authorized service shall be

sought if a problem exists.

ignition switch and/orthrottle control lever
on the engineto "OFF"or "STOP".

26. To load or unload the tiller, seethe in-
structions in Section4 of this Manua.

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

28. Startthe enginecarefully accordingto

thetines.

4. To reducethe chancesof a fire hazard,
keepthe enginefreeof grass, leaves,orex-

cessivegrease.

5. Store gasolinein acool, well-ventilated
area,safely awayfrom anyspark- or
flame-producing equipment. Store gaso-
line nanapproved container,safely away

from the reachof children.

8. Refedto the Maintenancesections of
this Manualand the separateEngineOwn-

er'sManualfor instructions ifthe unit isto
be stored for an extendedperiod.

7. Neverperform maintenancewhilethe
engine isrunning orthe sparkplug wire is
connected,exceptwhen specifically n-

structed to do so.

8. Ifthe fueltank hasto bedrained,dothis
outdoors

Decals

For your safety and the safety of others, vari-
ous safetyand operationaldecals are located
on your unit (see Figure 1,2).

ForwardClutchBail

ReverseClutchControl

OperatingInstruction

(Models 634F/634A)

Keep the decals clean and legible at all times.
Contact your local service dealer or the factory
for replacements if any decals are damaged or
missing.

Refer to the Parts List pages in this Manual for
decal locations, descriptions and part num-

bers.

StartingStabilization

Message (on engine)

WarningMessages

HotSurfacesWarning

Figure 1-2: Locationof safetyand operatingdecals.

OperatingSymbols

Varioussymbols(shownhere,withworddescriplions)
rr_ beusedonlhe_llerandengine.
NOTE:Yourunitm_ notha_ allof_esymbols.

FAST SLOW STOP TILLER DIRECTION LEVERDIRECTION

• READTHEOWNER'SMANUAL.

• KNOWLOCATIONSAND FUNCTIONSOFALL CONTROLS.

• KEEPALLSAFETYDEVICESANDSHIELDSIN PLACEAND WORKING.

• NEVERALLOWCHILDRENORUNINSTRUCTEDADULTSTO OPERATETILLER.

• SHUTOFFENGINEANDDISCONNECTSPARKPLUGWIRE BEFOREMANUALLYUN-

CLOGGINGTINESORMAKINGREPAIRS.

• KEEPBYSTANDERSAWAYFROMMACHINE.

• KEEPAWAYFROM ROTATINGPARTS.

• USEEXTREMECAUTIONWHENREVERSINGORPULLINGTHEMACHINETOWARDS

YOU.

I-'-I I*1 R

CHOKE CHOKE REVERSE

ON OFF ROTATINGTINES

TO AVOID SERIOUS INJURY:

BAIL

ENGAGED

BAIL

DISENGAGED

SECTION2: ASSEMBLY

WARNING: Toprevent ASSEMBLYSTEPS

personalinjuryor property
damage,do notstarttheengine STEP 1: UNPACKING INSTRUCTIONS

until all assemblysteps are NOTE:While unpacking,do notseverely
completeandyou haveread bendanycontrol cables.

and understandthesafety and 1.Thetiller weighs approximately 133 Ibs.
operatinginstructions inthis Do notattemptto remove it from the ship-
manual ping platform until instructedto do so in

INTRODUCTION

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

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(contactyour localdealer

model Engine styles vary by model Your or the factory itemsare missing or dam-
engine may appear differently than those aged).

illustrated in this manual,

INSPECTUNIT (Fig.2-1) toidentify screws.

Inspectthe unit and carton for damageim- LooseParts List

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

suspect damage. Inform them of the dam- 1
ageand request instructions for filing a

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

rierwithin 15 daysafterthe unit has been

delivered.ContactTroy-Bilt LLC if you
needassistancein this matter.

TOOLS/ MATERIALSNEEDED

(2) 1/2" open-end wrench*
(2) 9/16" open-endwrench*
(1)

3/8" open-endwrench* started. Followthe instructions inthis IMPORTANT:The support brackets must

(1) Largeadjustable wrench

(Models634F/634A only)
(1) Scissors (to trim plastic ties)
(1) Ruler (for belttension check)
(1) Block of wood (to support tiller when

removing wheels)
(1) Tire pressure gauge (for modelswith

pneumatictires)
(1) Cleanoilfunnel

(1)

MotoroiI. Refertothe EngineOwner's thetillerframeusing wo3/8- 6 3/4 hex

Manualfor oil specificationsand hd. screws (B), 3/8" flat washers (C),and

quantityrequired. 3/8"-16 hexIocknuts (D).

* Adjustable wrenches maybeused.

these Assembly steps.

2. Removeanypackaging materialfrom

the carton. Removeanystaples from the

bottom of the carton and removethe car-

ton from the shipping platform.

3. Removeall unassembledparts andthe _

separatehardwarebagfrom the carton. -.........

Checkthat you havethe items listed in the Figure2-1:Toidentifylengthofscrews,place

NOTE: Use the screw length template

0tv.

HandlebarSupport (seeA, Fig.2-2)

1

HandlebarAssembly(seeK, Fig.2-2)

4 Hex hd. screw. 5/16-18 x 1-1/2....... levelwhen thetines are3"-4" intothe

2 Hex hd. screw. 3/8-16 x 3/4'
2 FlatWasher,3/8"

4 Split Iockwasher,5/16"

4 Hex nut, 5/16"-18
2 Hex Iocknut, 343"-16

*Model 634F& 634A only
IMPORTANT: Motor oil must beaddedto

the enginecrankcasebefore theengine is

Sectionand in theseparateEngine
Owner's Manual.

NOTE: LEFTandRIGHTsidesof thetiller
are as viewedfrom the operator's position

behind thehandlebars,

STEP 2: ATTACHHANDLEBAR

1. Looselyattachthe legs of the handlebar
support (A, Fig.2-2) to the inner sides of

Description 3. Therearethree heightadjustment holes

Hardware bagcontents: sition the handlebarsat approximately

t "lx "

screwontemplateasshownandmeasuredis-

tancebetweenbottomofscrewheadandtipof

screw.

2. Usingtwo 5/16"-18 x 1-1/2"screws (G),
5/16" split Iockwashers (H)and5/16"-18
hex nuts (I), looselyattach the handlebar
support (A) usingthe upperholes. Tighten
thetwo screws securely.

....................... brackets(E

and F,Fig. 2-2). Usea setting that will po-

soil. Looselyattachthe support brackets
tothe outsideofthe handlebarassembly
(K) usingtwo 5/16"-18 x 1-1/2" screws
(G),5/16" split Iockwashers(H) and 5/16"-
18 hexnuts (I). NOTE:Ifasupport bracket
will not move loosenattaching screw (J)

and nut.

beassembledto the outsideof the
handlebarassembly.

4. Tighten all handlebar mounting hard-
waresecurely.

STEP 3: MOVE TILLER OFF CRATE
Toroll the tiller off the shipping platform,

put the wheels in freewheel,as follows:

1. Placeasturdy block underthe transmis-
sion to raiseonewheel about 1"off the

ground.

2. Removethe hairpin cotter (L, Fig.2-3)
and wheeldrive pin (M) from the wheel
hub (0) and wheel shaft (N).

K

G

Fig. 2.2: Attachhandlebar.

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

pushingthe hairpincotter in asfar as it will
go. Thewheelshould now spin freely
(freewheel) on the wheel shaft. Repeat

with the other wheel.

4. Usethe handlebarto roll the tiller to a
flat area.

Fig. 2-3: Wheel in FREEWHEELposition

STEP 4: INSTALL FORWARD
CLUTCH CABLE

1. Carefully unwrapthe forward clutch ca-

ble (cablewithout anattachedknob)from
its shipping position and slide thethin ca-
ble wire (T, Fig.2-4) into the slot in theca-
ble bracket. Pushthe cableconnector (U,
Fig.2-4) upthrough the holein the bracket
until the groove in the connector snaps
into place.

2. Thread the #10-24 hex nut (Z, Fig. 2-5)
halfwayonto the screw (V)which runs
through the spring (W, Fig.2-5).

3. Thread the screw (V) into the cablead-

B

juster (X).

IMPORTANT:Before starting the engine,

the wheels must be placedin the WHEEL

DRIVEposition (pins through wheel hubs
andwheelshaft). This procedureis

describedin WheelDrivePinsinSection3.

Fig. 2-4:Installing forward clutchcable bracketand cable.

4. Checkfor correct tension ontheforward
drive belt bytaking two measurementsof

the cable spring, asfollows

a. With the ForwardClutch Bail (Y,Fig.2-

6) in an open(released) position, measure

the length ofthe cablespring (W)from the

outermost coil to the outermost coil.
b. Squeezethe ForwardClutchBailagainst

the handlebar(see Fig. 2-7) and re-mea-

surethe spring length. The belttension is
correct if this secondmeasurementis be-

tween 1/16"to 3/16"longerthanthe first

measurement. If so, turn the hexnut (Z,

Fig.2-7) tightly against the cableadjuster
(X) while preventingthe cableadjuster

from turning.

c. If thespring length is incorrect, you
must adjustthe cabletension as described

"nCheckingand Adjusting Forward Drive
Belt Tensionin Section 5. Incorrect cable

tension can result in belt slippage (cable
tension too loose), or unintentional tine

movement whenthe clutch bail is inNeu-

tral (cable tension too tight).

Y

Fig. 2-7: Tocheckforwardbelttension, take twomeasurementsof thelengthofthecoils inthe
spring_ first with thebail open, thenwith thebail held against thehandlebar.

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

1. Unwrapthe reverseclutch cable (CC,
Fig.2-8 and Fig.2-9) from itsshipping po- BB

sition and route it up to the handlebar. Be
surethat the cableis routed beneaththe

Forward Clutch Bail.

2. Insertthecable(CC,Fig.2-8)through the DD
slot inthecablebracketand positionthe flat

sideof thethreadedassembly nextto the

flat sideof the hole. Slidethe hexnut(DD)

up thecable andtighten itsecurely. Flat Side

3. Fastenthe reverseclutch cableto the
left side handlebarwith a cabletie (EE,Fig.

2-9). Fig.2-8:Installreversecablebracketand

4. Testthefunction ofthe reverseclutch by reverseclutchcable.

pulling out and releasingthecable knob.
The knob should return to its neutral posi-
tion (resting against bracket). If it doesn't,

contact your local dealer or Troy-Bilt LLC
for technical assistance.

Fig. 2-5: Cable Fig. 2-6: Attachforward
springand clutchcable springto
adjuster, forwardclutchbail.

Fig. 2-9: Route reverseclutchcable(CC)as
shown. Attachwith cable tie (EE).

:sI=-P6: CHECKTRANSMISSION
OILLEVEL

Thetransmissionwasfilled withgearoil at
thefactory. However,you shouldcheck the

gear oil levelat this time to makecertain it
is correct.

IMPORTANT:Donot operatethe tiller if the
gearoil levelis low. Doingso will result in
severedamageto the transmission com-
ponents.

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

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

locatethe main driveshaft situated inside
the housing.

3. Thegear oil level is correct ifthe gear
oil is approximately halfway up theside of

the main driveshaft.

4. Ifthe oil levelis low,addgearoilby re-
ferring to A. ToCheckthe Transmission

GearOil Level in Section 5.

_SI I::P1: ADD IVlUI UH UIL
The tilleris shipped withoutoil inthe en-

gine.

IMPORTANT:Do notstart the enginewith-

out first adding motor oil. Severeengine

damagewill resultifthe engineis run with-

out oil.

1. Referto the separateEngineOwner's

Manualfor engineoilspecifications and

capacities.

2. With the tiller on levelground, movethe

DepthRegulator Lever(FF,Fig.2-10) up or

down until the engine is level.

3. Add motor oil asdescribed inthe En-

gine Owner'sManual.

4. Movethe Depth RegulatorLeverall the

way down until the highest notch is en-

gaged. This placesthe tines in the "travel"

position, which allows the tiller to be

moved without the tines touching the

ground.

:si 8: CHECKHARDWARE

Checkall nuts and screws for tightness.

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

Checkthe air pressurewith a tire gauge.
Deflateor inflatethe tires equallyto be-
tween 15 PSI and 20 PSI (pounds per
squareinch). Besurethat bothtires are in-
flated equally or the unit will pullto one

side.

FF--

Fig. 2-10: AdjustDepthRegulatorLever.

Fig. 2-11: Removegear oil fillplug.

llVlt'UNIAP]l: Jn_scompletesmeassembly steps.
Beforeoperating your tiller, makesureyou readthe
following sections in this Manual,aswell as the
separateEngineOwner'sManual:

• Section1: Safety

• Section3: Featuresand Controls

• Section4: Operation

SECTION3: FEATURESANDCONTROLS

WARNING: Before

operatingyour machine,
carefully readandunderstand
all safety,controls and
operatinginstructions inthis
Manual,the separateEngine

Owner'sManual, andon the
decalson the machine.

Failureto follow these
instructions can result in

serious personalinjury.

INTRODUCTION

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

fer to the following Section,Operationfor
detailedoperating instructions.

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

eration of the controls andfeelconfident
with eachof them.

ForwardClutchBail

ReverseClutchControl

(Models634F/634A)

DepthRegulator

Handlebar HeightAdjustment

Wheel Drive Pin

(oneachwheel)

ENGINE CONTROLS

Referto the engine manufacturer'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 a wheel drive
pin (A, Figures3-2 and 3-3) that secures
the wheelto the wheelshaft (B). The
wheelscan be positioned in either a

WHEELDRIVEor a FREEWHEELmode.

WARNING: Neverallow
eitherof thewheelsto beinthe

FREEWHEELposition when the
engineis running. Always put

both wheelsin the WHEEL
DRIVEposition beforestarting

the engine.

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

Beforestarting theengine,put both wheels
in the WHEELDRIVEposition byinserting

the wheel drive pins through the wheel

hubs andthe wheel shaft. Doingso
"locks" the wheels to the wheel shaft,

causingthe wheelsto turn when eitherthe

Figure3-1: Tillerfeaturesand controls.See sepereteEngineOwner'sManual to identify
enginecontrols.

Forward ClutchBail (all models) or the Re-

verse ClutchControl (Models 634F and

634A) isengaged.

Usethe FREEWHEELmode only whenthe

engineis not running. In FREEWHEEL,the

wheeldrive pins are placed only through
the holes in thewheel shaft (not the wheel

hubs), thus allowing the wheels to turn
freely whenyou manuallymovethe tiller.

To placethewheels in WHEELDRIVEor

FREEWHEEL:

1. Stopengine,disconnectspark plugwire

from spark plugandallowengineto cool.

WARNING: Do not place

tiller on its side whenchanging

wheeldrive positions. Doingso
could result in gasoline leaking

from thefuel tank.

Failureto follow this instruction
could result in personal injury

or property damage.

2. Raiseonewheelabout one inch off the

ground and placeasturdy support under
the transmission.

3. Removehairpincotter (C, Figures3-2

and 3-3) from wheel drive pin(A).

4. FORWHEELDRIVEMODE(Figure3-2):

Slide wheeloutward and align holes in

10

Figure3.2: WHEELDRIVE position.

wheelhub (D, Figure 3-2) and wheel
shaft (B). Insert wheeldrive pin (A)
through wheel hub (D)and wheel
shaft (B). Securewheel drive pin with hair-
pin cotter (C) by pushing hairpin cotter in
asfar as it will go. Repeatwith the other
wheeland then removethe support from

beneaththe transmission.

5. FORFREEWHEELMODE( Figure3-3):
Slidethewheel inwardand insertthe wheel

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

for the other wheel and then removethe
support from beneaththetransmission.

A

B

oD

\

C

Figure3,3" FREEWHEELposition.

WARNING: Beforestarting

engine,besure that both
wheelsare in WHEELDRIVE

position. SeeWheelsDrive

Pins for instructions.

Engagingthe ForwardClutch
Bail or ReverseClutchControl

(if equipped) when thewheels
are notin WHEELDRIVEcould

allowthe tinesto rapidly propel
thetiller forward or backward.

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

FORWARDCLUTCHBAIL

TheForward Clutch Bail(E, Figure3-4)
controls the engagementof forward drive

to the wheelsand tines.

Tooperatethe ForwardClutchBail:

1. Put wheels in WHEELDRIVEposition
(see"WARNING"statement above).

2. Lift and hold the clutch bail (E, Figure3-

4) againstthe handlebarto startthe wheels
andtines rotating inaforward direction.

3. Releasetheclutch bailto disengage
(stop) thewheels andtines (the enginewill
continue to run).

REVERSECLUTCHCONTROL
(Models634F/634A only)

TheReverseClutchControl (F,Figure3-4)
controls the engagementof reversedrive
to the wheelsand tines. The reversing

featureisusedfor maneuveringthetiller
only-- neverengagethe tines inthe
groundwhile operatingin reverse.

WARNING: Useextreme

caution whenreversing or
pulling the machinetowards

you. Look behindto avoid

obstacles.
Neverattemptto till inreverse.

Failureto follow this warning
could result in personal injury
or property damage.

To operatethe ReverseClutchControl:

1. Put wheels in WHEELDRIVEposition

(see"WARNING"statement at the left).

2. Stop all tiller motion by releasingthe

Forward Clutch Bail.

3. Lift the handlebar untilthe tines clear

the ground, look behind you to avoid any

obstacles,and then pull the control knob

(F,Figure3-4) out. Thewheels andtines

will rotate in a reversedirection.

4. Releasethecontrol knob to disengage

(stop) the wheelsandtines (the enginewill

continue to run).

Figure3-4: All modelshave aForwardClutch

Bail (E). OnlyModels 634F/634Ahavea Re.

verseClutchControl(F).

DEPTH REGULATORLEVER

This lever (G, Figure3-5) controls the till-

ing depth of the tines. Pull the lever back

and slide it upor downto engagethe

notched heightsettings.
The"travel position" (highestnotch) raises

the tines approximately1-1/2"offthe

ground,allowing the tiller to be moved

without the tines contacting the ground.
This setting should also be used when

starting the engine.

Moving the lever upward will increasethe
tilling depth. Thelowestnotch allows atill-

ing depth of approximately 6", depending

onsoil conditions. Forbestresults,always

begintilling at avery shallow depthsetting
and gradually increasethe tilling depth.

WARNING: Do notattempt

totill too deeplytoo quickly.
Graduallywork down to deeper
tilling depths.
Placethe DepthRegulator
Leverin the "travel" position
beforestarting the engine. This
position preventsthetines from
touching the ground until you
are readyto begintilling.
Failureto follow this warning
could result in personal injury
or property damage.

TravelPosition !G

Settings

Figure3-5: Depth RegulatorLever (G).

HANDLEBAR HEIGHT ADJUSTMENT

Thehandlebarheight isadjustableto three
different settings (Figure 3-6). In general,
adjust the handlebars sothey areat waist

levelwhen the tines are3"-4" in the soil.
Toadjust the handlebars:

1. Stop engine, disconnect spark plug
wire from spark plug and allow engineto

cool.

2. Removehardware,reposition handle-
bars, and reinstall hardwaresecurely.

High

Figure3.6: Handlebarheightadjustment.

11

SECTION4: OPERATION

WARNING: Before

operatingyour machine,
carefully readandunderstand
all safety (Section 1),controls
(Section 3) and operating
instructions (Section 4) inthis
Manual,the separateEngine

Owner'sManual, andon the
decalson the machine.

Failureto follow these
instructions can result in

serious personalinjury.

INTRODUCTION

Readthis OperationSectionandthe sepa-
rate EngineOwner'sManualbeforeyou
start the engine. Then,take thetime to fa-
miliarize yourself with the basic operation
of the tiller before using it in the garden.
Findanopen, levelareaandpractice using
thetiller controls without thetines engag-
ing the soil (put tines in "travel" setting).
0nly after you've becomecompletely fa-
miliar with thetiller shouldyou beginusing
it in the garden.

BREAK-INOPERATION

Perform thefollowing maintenanceafter
thefirst two (2) hours of new operation

(seeMaintenance Section in this manual
and in the EngineOwner's Manual).

1. Changeengine oil.

2. Checkfor looseormissing hardwareon
unit. Tightenor replaceas needed.

3. Checktension on forward drive belt.

4. Checktransmission gear oil level.

STARTINGANDSTOPPING

Pre-StartChecklist

With thespark plug wire disconnected
from the spark plug, perform thefollowing

checksand services beforeeach use:

1. Readthe Safetyand Controls Sections
in this manual. Readthe separateEngine
Owner'sManual providedwith the unit.

2. Putthe wheels in the WHEELDRIVE
position (wheel pins must bethrough

holes in wheel hubsand wheel shaft).

3. Checkunit for loose or missing hard-
ware. Serviceasrequired.

4. Checkengineoil level. See Engine
Owner'sManual.

ReverseClutchControl
(Models634F/634A)

)epthRegulator

Drive Pin

Fig. 4-1

5. Checkthatall safety guards andcovers

are in place.

6. Checkair cleaner and enginecooling

system. SeeEngineOwner's Manual.

WARNING: GASOLINEIS

HIGHLYFLAMMABLEAND ITS
VAPORSAREEXPLOSIVE.

Follow gasolinesafety rules in

this Manual(seeSection1)and

in theseparateEngineOwner's
Manual.

Failureto follow gasolinesafety
instructions can result in

serious personalinjury and
property damage.

7. Fillthefueltankwith gasolineaccording

to the directions in the separate Engine

Owner's Manual. Followall instructions

and safety rules carefully.

8. Attach spark plug wire to spark plug.

Startingthe Engine
The following steps describe how to start

and stop the engine.

WARNING: Donotattempt

to engagethe tines or wheels

until you havereadall of the
operating instructions in this

Section. Also, reviewthe safety
rules in Section 1: Safety,and

the tiller andenginecontrols

information in Section3:

Featuresand Controls.

1. Completethe Pre-Start Checklist on
this page.

2. Putthe wheels inthe WHEELDRIVEpo-
sition (seeWheelDrive PinsinSection3 of
this manual).

,_ WARNING: To help

• Before starting engine, put both

wheels in the WHEEL DRIVEposition.
Never havewheels in FREEWHEELpo-
sition when engine is running. When
thewheelsare in FREEWHEEL,theydo

not hold backthe tiller and the tines
couldpropelthe tiller rapidly

forwardor backward.

• Before starting engine, put Forward

Clutch Bail (all models) and Reverse
Clutch Control (Models 634F/634A
only)in neutral(disengaged)positions
byreleasing levers.

• Never run engine indoors or in en-

closed,poorlyventilatedareas. Engine
exhaustcontainscarbonmonoxide,an

odorlessanddeadlygas.

• Avoidenginemufflerandnearbyareas.

Temperaturesin these areas may ex-
ceed150° F.

3. Movethe DepthRegulatorLeverall the
way down to the "travel" position, sothat
thetines clear the ground.

4. Releaseall controls on the tiller.

5. On engine'swith afuel shut-off valve,
turn valveto open position, as instructed
in the separate EngineOwner's Manual.

6. Put ignition switch and/or throttle con-
trol lever located on engine in the "ON",
"RUN", "FAST"or "START"position, as in-
structed in the EngineOwner's Manual.

7. Chokeor prime engine,as instructedin
EngineOwner'sManual.

8. Put one hand on fuel tank to stabilize
unit when pulling starter rope handle.

Thenuse recoilstarter to start engine,as
instructed in the EngineOwner'sManual.
Whenenginestarts, graduallymove choke
lever (if so equipped) to "NO CHOKE",
"CHOKEOFF"or "RUN" position.

9. Usethe "FAST"throttle speedsetting
whentilling.

preventserious personalinjury
or damageto equipment:

12

KEEPAWAYFROMROTATINGTINES.

ROTATINGTINESWiLL CAUSEiNJURY.

Stoppingthe EngineandTiller

1.To stop thewheelsandtines, releasethe
Forward ClutchBail (all models) or the Re-
verse ClutchControl (Models 634F and
634A) --whichever control is in use.

2. Tostopthe engine, put the ignition
switch and/or the throttle control leverin

the "OFF"or "STOP"position.

OPERATINGTHE TILLER

Thefollowing operatinginstructions pro-
videguidelines to using your tiller effec-
tively and safely. Besureto read Tilling

Tips & Techniques in this Section before

actually putting the tines into the soil.
NOTE:Thisis a traditional "Standard-Ro-

tating-Tine" (SRT)tiller with forward ro-
tating tines. It operatescompletely
differently from "Counter-Rotating-Tine"
(CRT)tillers or from front-tine tillers.

1. Followthe Pre-StartChecklist at the
beginning ofthis Section. Besurethat the

wheelsare in the WHEELDRIVEposition.

2. Movethe DepthRegulator Leverall the
way down, sothat the tines clearthe
ground. Usethis position whenpracticing

with thetiller andwhentraveling between
tilling sites. Beforeactually tilling, move
the lever to the desireddepth setting (see

Tilling Tips& Techniques).

3. Start engine and allow it to warm up.

Then put throttle in "FAST"setting.

4. Forforward motion of the wheelsand

tines:

(a) Pull ForwardClutch Bail (Fig. 4-1) up
againsthandlebar. Releasebailto stop for-

ward motion of wheels and tines.
(b) Whentilling, relaxand let the wheels

pull the unit while the tines dig. Walk be-
hind anda little to oneside ofthe unit. Use

one hand,yet keepa light--but secure--
grip on the handlebar (while keepingyour
arm loose). SeeFig.4-2. Let the unit
move at its own paceand do not push
down on the handlebarsto try andforce

the tines to dig deeper-- this takes weight

off the wheels, reducestraction, and caus-
esthe tines to try and propel the tiller.

WARNING: Do not push

down onthe handlebarsto try

to makethe tiller till more

deeply. This preventsthe
wheelsfrom holdingthe tiller

backand canallow thetines to
rapidly propelthe tiller forward,

which could result in loss of
control, property damage,or

personalinjury.

5. Forreversemotion of the wheelsand

tines (Models634F/634Aonly):

(a) Lookbehindandexercisecaution when
operating in reverse. Donottill while in

reverse.

(b) Stopall forward motion. Lift handle-
bar with onehanduntil tines are off the

ground and then pull ReverseClutchCon-

trol knobout (seeFig.4-3). Tostoprevers-

ing, let go of ReverseClutch Control knob.

(b) Swingthe handlebarto the left so the
right wheeltakesa "step" backward.Next
swing the handlebarto the right sothe left
wheel"steps" backward.Repeatasneeded.

(c) If longer distancesneedto be covered
in reverse,shut off the engine,then place

thetwo wheels in FREEWHEEL.

7. ToTurntheTiller Around:
(a) Practiceturning thetiller in a level,

open area. Bevery careful to keepyour
feet and legsawayfrom the tines.

(b) Tobegina turn, lift the handlebarsuntil
thetinesareout ofthe groundandtheengine
andtines are balancedoverthe wheels(Fig.
4-4).

(c) With tiller balanced,push sidewayson
handlebarto steer in direction of turn (Fig.
4-5). After turning, slowly lowertines into
soil to resumetilling.

Fig.4,4: Tobeginturn,lift handlebarsuntil
tinesareoutofgroundandunitisbalanced.

Fig. 4-2: Use onehand to guidetiller when
movingforward.

Fig. 4,3: Raisetines offgroundand look
behind whenmoving in reverse.

6. Tomovethe Model630Cin reversefor
short distances:

(a) Releaseforward ClutchBail. Thenlift
handlebaruntiltines are off the ground.

13

Fig. 4.5: Withtinesout ofground,push han-
dlebarssidewaystoturn tiller.

StoppingtheTillerandEngine

1. Tostopthe wheels and tines, release
the ForwardClutch Bail (all models) or the
ReverseClutch Control (Models 634Fand
634A) -- whichevercontrol is in use.

2. Tostopthe engine, put the ignition
switch and/orthe throttle control leverin

the "OFF"or "STOP" position.

TILLING TIPS&TECHNIQUES

Tilling Depths

WARNING: Before

tilling,contactyour
telephoneor utilities

companyand inquire if
underground equipment or
lines areused on your

property. Do nottill near

buried electric cables,

telephone lines,pipes or

hoses.

• Whencultivating(breakingupsurfacesoilaroundplantsto destroyweeds,seeFig.4,9), adjustthe tinestodig only 1"to 2,deep. Using

shallowtilling depthshelpspreventinjuryto plantswhoserootsoftengrowclosetothesurface. If needed,lift uponthehandlebarsslightly

to preventthetines from diggingtoo deeply.(Cultivating ona regularbasisnotonlyeliminatesweeds,it alsoloosensandaeratesthe soil

for bettermoistureabsorptionandfaster plantgrowth.)

• Avoid pushingdown onthe handlebarsin anattemptto forcethe tiller to dig deeper.Doing
sotakestheweightoff the poweredwheels,causingthemto losetraction.Without thewheels

helpingto holdthe tiller back,thetineswill attemptto propelthetil!er- oftencausingthetiller

to skip rapidlyacrossthe ground. (Sometimes,slightdownwardpressureonthehandlebars
will helpgetthrougha particularlytough sectionof sodor unbrokenground,butinmostcases

this won,t benecessary.)

• Avoidtrying to dig too deeplytoo quickly,especiallywhenbustingsodor when tilling soi!
that hasn,tbeentilledfor sometime. Useshallowdepthregulatorsettings(on!yaninchortwo
deep)for thefirst passesthrough thesoil,With eachsucceedingpass,diganotherinchortwo

deeper.(Wateringthe areaafew dayspriorto tilling will maketilling easier,as will lettingthe

newlyworkedsoil setfor aday or two beforemakinga final, deeptilling pass.)

ChoosingCorrectWheel&Tine Speeds With experience,you will find the "just right',tilling depthandtillingspeedcombination

that is I_estfor your garden.

Settheenginethrottleleverataspeedto give theengineadequatepowerandyet allowitto operateattheslowestpossib!espeed.,at least

untilyou haveachievedthe maximumtilling depthyou desire.Fasterenginespeedsmaybedesirablewhenmakingfinal passesthrough

theseedbedor whencultivating, Selectionof thecorrect enginespeed,inrelationtothetilling depth,will ensureasufficientpowerlevelto

dothejob without causingtheengineto labor.

LettheTiller DotheWork

Whiletilling, relaxandletthe wheelspullthe

tiller along while the tines do thedigging,

Walkon thesidethat is not yet finished(to

avoidmakingfootprints in the freshlytilled

soil) and lightly,but securelygrip thehan-

dlebarwith just onehand.

AvoidMakingFootprints

Whenever possible,wa!k on the untilled

sideof the unitto avoid makingfootprintsin
your freshly til!ed or cultivatedsoil. Foot-

printscausesoil compactionthat can ham-

per root penetrationand contribute to soil
erosion.They can also ',plant,,unwanted
weed seeds back into the freshly tilled

ground.

PreparingSeedbeds

• When preparing a seedbed,go overthe samepathtwice in thefirst row,then
ishedin onedirection,make a secondpassat aright angle,asshownin Fig,4,7:

overlapone,halfthe tiller width on the rest ofthe passes(see Fig,6). Whenfin-
Overlapeachpassfor best results(in veryhard ground,it maytakethreeor four

passesto thoroughlypulverizethesoil.)

• Ifthe gardensizewill not permitlengthwiseandthencrosswisetilling, thenover-
lapthefirst passesbyone,halfatiller

width,followedbysuccessivepasses
at one-quarterwidth (seeFig,4-8)

Fig. 4,8

AvoidTillingSoggy,WetSoil

Tilling wet soil oftenresultsin large,hard

clumps of soil that can interferewith plant-

ing.If time permits, wait a dayortwo after
heavyrains to allow the soil to dry before

tilling. Testsoil by squeezingit intoa ball.If

itcompressestooeasily,it is too wetto till,

Fig.4-6

Fig. 4-7

Cultivating

With planning, you can ..,_,_vj_, _,_ v_,_
allowenoughroom i_i _i(_i

betweenrows tocultivate__)_
(seeFig.4,9). Leaveroom_J_-')_¢"_

for the hood width, J""_,-%._"_lt_

plus enough extra _ "4A-_-
roomfor future plant Fig. 4-9

growth.

14

TILLING TIPS&TECHNIQUES(CON'T)

PowerComposting

Powercompostingsimply meanstilling underand burying inthesoil allmanneroforganic WARNING: Whenpower
mattersuchas cropresidues,leaves,grassclippingsandcovercrops.This materialwill de- composting, do not keepthe
composeduringthe non,growingseasonandaddimportantnaturalnutrientstothesoil. Depth Regulator Leverat a

Thefirst placeto beginiswith crop residuessuchasleftovervines,stalks,stemsandroots, deepsetting ifthe tiller jumps
Powercompostthesecrop residuesas soonastheyfinish bearing.Thesoonerthis isdone, or bucks,
thebetter,astendergreenmatteris easiertotillunder. Usethedeepestdepthregulatorset- If jumping or bucking occurs,

ting possiblewithout causingtheengineto laboror thetillerto jump ahead, movethe DepthRegulator

Leverdown to a shallow
Standingcornstalksof reasonableheightcan bepowercomposted.Pushing over(but not ._e.ftnnand the.n._nw V
uprooting)cornstalkswill oftenmakeit easierto chopupthestalks.Keepthetinesclearof incieasethetiilinc]deoth on

excessivetanglingby fishtailing orfrequentlyusingreverse.Makeseveralpasses,thenre, ........._.._....

turna fewdays latertofinish off any remainingstubble. Failureto followthis warning
Aftertilling undercrop residues,addmoreorganicmattersuchas leaves,grassclippingsand could resultinpersonalinjury.

evenkitchenscraps. Whentilled intothe soil,this organicmatterwill decomposeandadd
evenmore importantnutrientstothe soil.

Afterpowercomposting,you maywantto planta !'greenmanure"covercrop to protectthesoil duringthe off-season.Yousimplygrowa
cropof clover,alfalfa,buckwheat,peas,beans,ryegrass,grain, orkaleandthentill it intothesoilprior to the plantingseason.

TillingOnSlopes

dtg/ pdbb_b.

Readthe followingrecommendationsbeforetilling onslopes: _ WARNING: Donot

Ifyou must gardenon a moderateslope,pleasefollow twoveryimportantguidelines: A operatetiller on aslopetoo

1. Till onlyon moderateslopes,neveronsteepgroundwherefootingis difficult(reviewsafe- _ steepfor safeoperation. Till
ty rulesin Section1: Safetyof this manual), slowly and besure you have

2. Werecommendtilling upanddown slopesratherthanterracing. Tillingvertically on a
slopeallows maximumplantingareaandalsoleavesroomfor cultivating.

IMPORTANT:Whentilling on slopes,besurethecorrect oil levelis maintainedintheengine
(checkeveryone-halfhour of operation). The inclineoftheslopewill causethe oilto slant
awayfrom its normallevelandthis canstarveenginepartsof requiredlubrication. Keepthe

motor oil evelatthefull pointatall times!

TillingUp and DownSlopes(Vertical Tilling)

• Tokeepsoilerosionto a minimum, besureto addenoughorganicmattertothe soil so that it hasgood moisture-holdingtextureandtry
toavoid leavingfootprintsor wheelmarks.

• Whentillingvertically,try to makethefirst passuphillas thetiller digs moredeeplygoing uphillthan it doesdownhill. Insoftsoil or
weeds,you mayhaveto iftthe handlebarsslightly while going uphill. Whengoingdownhill, overlapthefirst passbyaboutone-halfthe

width ofthe tiller.

TillingAcrossSlopesWithout UsingTerraces(HorizontalTilling)

• Ifvertical or terracinggardeningaren'tpracticalfor you,then you cantill laterallyacrossa slope. Wedon't recommendthis methodas
it cancreateunsurefootingand invitessoil erosion.

• As interracegardening,startat thetop ofthe slopeandoverlapthe first passby halfthewidth ofthetiller. Foraddedstabilityof thetiller,
alwayskeepthe uphillwheelinthe soft, newlytilled soil.

TerraceGardening

• Whena slopeis too steepor too short for verticaltilling, it may benecessaryto till acrosstheslopeandcreateterracedrows.Terraces
arerowsthat arecut intothe sideof a slope,creatinga narrow,butflat areaonwhich to plant.

• Ona longslope,you canmakeseveralterraces,onebelowtheother.

• Terracesshould beonly24o-3 feetwide. Diggingtoofar intothe sideoftheslopewill exposepoorsubsoilthat is unproductivefor plants.

goodfooting. Neverpermit

tiller to freewheeldown

slopes.Failureto follow this
warning could result in
personalinjury.

15

TILLING TIPS&TECHNIQUES(CON'T)

• Eachsucceedinglowerterraceis startedbywalkingbelowtheterraceyou'repre- !1_
paring. Foraddedstabilityofthetiller,alwayskeepthe uphillwheelinthe soft,new- ___

ly tilled soil. Donot till the last12"or more of the downhilloutside edgeof each
terrace. This untilled strip helpspreventsthe terracesfrom breaking apartand

washingdownhill.It also providesawalking pathbetweenrows. 0 _RePeAT

Fig. 4-10

Clearingthe Tines

Thetines haveaself,clearingaction whicheliminatesmost tanglingof debrisin
thetines. However,occasionallydry grass,stringy stalksor toughvinesmaybe,
cometangled.Follow theseProceduresto helpavoid tanglingandto cleanthe

tines,if necessary.

• To reducetangling,set the depth regulatordeep enoughto get maximum
"chopping"actionasthetines chopthe materialagainsttheground. Also,tryto

till undercrop residuesor covercropswhile theyaregreen,moist andtender.

• While powercomposting,try swayingthe handlebarsfrom sidetOside(about
6"to 12"). This ,,fishtailing',action oftenclearsthetinesofdebris.

• Iftangling occurs,liftthetines out ofthesoil andrunthe tiller in reverse(if unit
is equippedwith poweredreverse)for a few feet. This reversingactionshould

unwindagooddealof debris,

• It maybenecessaryto removethedebrisby hand
(apocketknifewill helpyouto cut awaythemate-

rial).Besureto stopthe engineanddisconnectthe

spark plugwirebeforeclearingthetines byhand.

WARNING: Beforeclearingthe

A tines byhand,stopthe engine,allow

all movingpartsto stop and

disconnect thespark plugwire.
Removethe ignition keyon electric

start models.
Failureto follow this warning could

result in personal injury.

LOADINGANDUNLOADING • Usesturdy rampsand manually(engne tilleraheadof you. Havea personat each
THETILLER shut off) roll thetiller into and out of the sideto turn the wheels

vehicle. Twoor more peopleareneededto • When going down ramps, walk back-

_, WARNING: Loadingand dothis. ward with thetiller following you. Keep

• Beforeloading or unloading,stopthe en- ' ' ' •
gine,wait for all partsto stop moving, • Positionthe loadingvehicle so that the in the vehicle.
disconnect the spark plug wire and letthe ramp angleis asflat as possible (the less • After loadingthetiller, preventit from
engineand muffler cool. incline to the ramp, thebetter). Turnthe rolling byengaging thewheels in the

• The tiller is too heavyand bulky to lift vehicle'sengine off and apply its parking WHEELDRIVEposition. Chockthe wheels
safelyby one person.Two or more people brake, with blocksandsecurely tiethe tiller down.

should share the load. • When going upramps, stand in the

unloadingthe tiller into a • Theramps must be strong enough to alertfor any obstaclesbehindyou. Posi-

vehicle is potentially hazardous support thecombined weight ofthe tiller tion a person at eachwheelto control the

andwedon't recommenddoing and any handlers.Theramps should pro- speedof thetiller. Nevergo down ramps
sounlessabsolutely necessary, vide goodtraction to preventslipping;they tiller-first, as thetiller could tip forward.
asthis could result in personal should haveside railsto guidethetiller
injury or property damage, along the ramps; andthey should havea
However,if you must load or locking deviceto secure them to the

unloadthe tiller, follow the vehicle.
guidelinesgiven next. • The handlersshouldwearsturdy footwear

that wdl helpto preventshppmg

normal operating position and push the

• Placewooden blocks on the downhill
side of the wheels if you needto stop the

tiller from rolling downthe ramp. Also,
usethe blocksto ternporarily keepthetiller
in placeonthe ramps(if necessary),andto
chockthe wheels in placeafter the tiller is

16

SECTION5: MAINTENANCE

WARNING: Before

inspecting, cleaningorservicing

the machine,shut off engine,

wait for all moving partsto come

to a completestop, disconnect

spark plug wire and movewire
awayfrom spark plug. Remove

ignition keyon electric start

models.

Failureto follow these
instructions can result in serious

personalinjury or property

damage.

MAINTENANCE SCHEDULE

PROCEDURE NOTES

Check motor oil level 2, 3
Clean engine 2, 7

Check drive belt tension
Check nuts and bolts 1,4

Change motor oil 4, 6, 9
Lubricate tiller 4

Service engine air cleaner system
Check gear oil level in transmission 1,5

Check tines for wear 5
Check air pressure in tires 5

(if unt has pneumat Ct res)
Service spark plug 7

1,4

1- Checkafter first 2 hours of break,in operation.

2 _ Beforeeach use.
3 ' Every 5 operating hours.

4 - Every 10 operating hours.

5 - Every 30 operating hours.
6 - Change more frequentlyin dustyconditions.

7, See EngineOwner'sManual for service

recommedations.

8 - Whichevertime interval occurs first.
9 - Changeafterfirst 2 hours of break-in

TILLERLUBRICATION

After every 10 operating hours, oil or
greasethe lubrication points shown in

Figure5-1 and described below,

Usecleanlubricating oil (#30weight motor
oil issuitable) and cleangeneralpurpose
grease(greasecontaining a metallubricant

is preferred, if available).

• Removethewheels,cleanthe wheelshaft

(A,Fig. 5-1) andapply a thin coating of
greaseto the wheel shaft.

• Greasethe back, front andsides of the
depth regulator lever (g, Fig.5-1).

• Removethe tines andclean thetine shaft

(C, Fig.5.1). Usea file or sandpaperto
gently remove anyrust, burrs or rough

spots (especially around holesin shaft).
Applygreaseto ends of shaft beforeinstall-

ing tines.

• Oilthe threads on the handlebarheight
adjustment screws and thehandlebar

attaching screws(D, Fig.5,1).

Figure5-1

CHECKFOROILLEAKS

Beforeeachuse,checkthetil!er for signs of
an oil leak--usually a dirty, oily accumu-

lationeither on the unit oron thefloor.
A little seepagearounda cover oran oil
sealis usuallynot a causefor alarm,How-
ever, ifthe o!l drips overnight, then imme-
diateattention is needed. Ignoring an oil

leakcan result in severe transmission

damage!

17

If a cover is leaking, checkfor loose
screws.If the screwsaretight, a new
gasket or oilseal may be required.

If the leak isfrom around a shaft andoil
seal, theoil sealprobably needsto be

replaced. Seeyour authorizeddealer or
contact thefacto ryfor serviceor advice.

IMPORTANT:Neveroperatethe tiller if
the transmission is low on oil. Check

the oil levelafter every30 hours of

operationand wheneverthere is any oil

leakage.

CHECKHARDWARE

Checkfor looseor missing hardwareaf.
ter every 10operating hours andtighten

or replace(as needed)beforereusing
tiller

Besureto checkthe screws underneath
the tillerhoodthat securethe transmis-

sioncoverandthe DepthRegulatorLever
to the transmission.

CHECKTIRE PRESSURE

(Modelswithpneumatictires)

Checktheair pressure in bothtires. The
air pressure should be between 15 PSI
and 20 PSI (pounds per squareinch).

Keepbothtires equally inflatedto help

prevent machinefrom pullingto one
side.

TRANSMISSION

GEAROILSERVICE

Checkthe transmission gear oil level
after every30 hours of operationor

wheneveryou notice any oil leak, Oper-
ating the tiller when thetransmissionis

low on oil can result in severedamage.

A. ToCheckthe Transmission

GearOil Level:

1, Checkthe gear oil level when the
transmission is cool. Gear oil will

expandin warm operatingtemperatures
and this expansionwill provide an incor,

rect oil levelreading.

2. With the tilleron levelground, pull the

Depth RegulatorLeverall the way up.
3, Removethe oil fill plug (A, Fig.5,2)

from thetransmission housingand look

insidethe oil fill hole to locatethe main

driveshaft situated below the hole.

WARNING: Beforeinspecting,cleaningor servicing themachine,shut offengine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom
spark plug. Failureto follow these instructions can result in serious personalinjury or property
damage.

4. Thegear oil level is correct ifthe gear B.ToDrainthe Transmission Gear0il:
oil is approximately halfway up theside of Thetransmission gear oil doesnot needto

the main driveshaft.

5. If the gearoil levelis low,addgearoil
asdescribed next. If the gear oil levelis
okay,securely replacethe oil fill plug.

IMPORTANT:Donot operatethetiller if the
gear oil levelis low. Doingso will result in
severedamageto the transmission com-
ponents.

Figure5-2: Removeoil fill plug (A) to check

gearoillevelandtoaddgearoil. Remove its vaporscouldreachan openflame forward.
fourcoverscrews(B)todraingearoil. orspark, orwhere ignitionsourcesare C. Removing/Installinga TineAssembly:

6. If adding onlya few ouncesof gear oil heaters, furnaces, clothes dryers, mounted on atine holder.
useAPI ratedGL-4or GL-5gearoil having stoves,electric motors,etc.)

aviscosity of SAE140, SAE85W-140 or
SAE80W-90. If refilling an empty trans-

mission, useonly GL-4gearoil havinga 2. Drainthe oil from the engine
viscosity of SAE85W-140 or SAE140. 3. Removefour screws(B, Figure5-2) and

IMPORTANT:Do not use automatic trans- removetransmissioncoverandgasket.

missionfluid or motor oil inthe transmis- 4. Removethe left-side wheel.
sign.

7. While checkingfrequently to avoid
overfilling, slowly add gear oil into the oil

fill hole until itreachesthe halfwaypoint on
the drive shaft.

8. Securely replacethe oil fill plug

bechangedunless it hasbeencontaminat- should be inspectedat the beginning of
ed with dirt. sand or metal particles, eachtilling seasonand afterevery 30 oper-

1. Drain gasolinefrom the fuel tank or run ating hours. Thetines can be replacedel-

the engine until thefuel tank is empty.See ther individually or as acomplete set. See

"DANGER"statement below, the Parts List pagesfor tine identification

,_ WARNING: Gasoline is and part numbers.

• Allowthe engine and muffler to cool
for at least two minutesbefore drain- B. Removing/Installinga SingleTine:

ingthe tiller's gasolinetank. 1. With the engineshut off and the spark

• Do not allow open flames, sparks, plug wire disconnected,removethetwo
matchesor smokingin the area. screws (A, Figure5-3), Iockwahers(E)and

• Wipeaway spills and pushtiller away nuts (B) that attach a single tine to a tine
from spilledfuel. holder. If needed,use penetratingoil on

• Use only an approved fuel container the nuts.
and store it safely out of the reach of 2. When installing a singletine, besure to
children, position it so that its cutting edge(sharp)

• Do notstoregasoline in an area where will enter thesoil first as the tiller moves

present(suchas hot water and space 1. A tineassemblyconsists ofeighttines

5. Tilt the left-sidewheelshaft into adrain sembly outward offthe shaft.

panand allowthe gearoil to drainthrough

the top of thetransmission

6. Reinstall the wheel.

7. Install a newgasket (do not reuse old

gasket)and reinstall the transmission cov-
er.

8. Refillthetransmission usingGL-4 gear thesofl first whenthe tillermoves forward.

oil (SAE85W-140 or SAE140). Securethe tine assemblyto the tine shaft

9. Refillthe enginewith motor oiland re- using the screw and Iocknut

plenishthe fuel tank with gasoline.

highlyflammableanditsvapors A. Tine Inspection:
areexplosive. Followthese With use,the tines will becomeshorter
safety practicesto prevent
personalinjury or property
damagefrom fire or explosion.

BOLOTINES

Thebolo tines will wearwith useand

narrower and pointed. Badlyworn tines
will result in a loss of tilling depth, and re-
ducedeffectiveness whenchopping up
and turning under organic matter.

2. If removing bothtine assemblies,mark
them "left" and "right" beforeremoval.
Removethe screw (C, Figure 5-3), lock
washer (E)and Iocknut (D)that securethe
tine assemblyto the tine shaft. If neces-
sary,use a rubber mallet to tap the tineas-

3. Beforereinstalling thetine assembly,in-
spectthe tineshaft for rust, roughspots or
burrs. Lightlyfile or sand as needed.Ap-
ply a thin coat of greaseto the shaft.

4. Install eachtine assemblyso that the
cutting (sharp)edgeof thetines will enter

18

WARNING: Beforeinspecting,cleaningor servicing themachine,shut offengine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom
spark plug. Failureto follow these instructions can result in serious personalinjury or property
damage.

FORWARD

n

___ FRONT/

Figure5-3: Install tinessothat cuttingedgeoftines entersoil firstwhen tiller movesforward.

CHECKINGANDADJUSTING
FORWARDDRIVEBELTTENSION

It is important to maintain correct tension

on the forward drive belt. A loosebeltwill
causethe tinesandwheelsto slow down

or stop completely even though the en-
gine B running atfull speed. A too tight

belt can result in unintentional tine move- 5. Toadjust the length of the spring:
ment whenthe clutch bail is inthe Neutral a. Releasethe Forward Clutch Bail.

(released)position.

• Check belttension after the first two
hours of break-inoperation andafter every

10 operatinghours.

• At the end of eachtilling season,check
the belt for cracks, cuts or frayed edges
and replaceit assoon as possible

ToCheckForwardBeltTension:

1. Stop engine, wait for all parts to stop

mowng and disconnect spark plug wire.

2. With the ForwardClutch Bailinan open
(released)position, measureand notethe
overalllength ofthe cablespring (A,Figure
5-4) bymeasuringfrom the outermost coil

to the outermost coil.

3. Squeezethe Forward Clutch Bail
againstthe handlebar(see Figure5-4) and
re-measurethe length of the coils. The

belt tensionB correct ifthis second mea- your local authorizeddealeror referto the
surement is between1/6"-to- 3/16" longer Parts List for ordering information. Use

than the first measurement, only afactory-authorized belt asan "over-

4. If the spring istoo short (less than the-counter" belt may not perform satis-

1/16"),the tension istoo loose. If the mechanicalability andcommonly available
spring is too long (more than 3/ 6 ), he tools.

tension istoo tight.

Figure5-4: Tocheckforwardbelt tension, take twomeasurementsofthe
overalllengthof the coilsin thespring_ firstwiththe clutchbail open,

thenwith theclutchbail closedagainstthe handlebar.

19

1" t

b Unthreadthe hex nut (C, Figure5-4)

halfway upthe adjustment screw (D).

c. Unhookthe top of the spring from

the Forward Clutch Bail.

d. Usepliers to preventthe adjuster (B)
from turning and turn the slotted screw lo-
cated insidethe spring clockwise (viewed
from operator's position) to increaseten-
sion on the spring. Turnthe screw coun-

terclockwise to decreasetension. Once
adjusted,reattach the spring to the For-

ward Clutch Bail.

e. RepeatSteps2 and3to re-measure
thelengthof the spring. Whenthe second

measurementis between1/16"-to-3/16"
longerthanthefirst measurement,retighten

thehexnut(C)againstthetop ofthe adjuster
(B).

ReplacementBelt Information

Ifthe drive belt needsto be replaced,see

factorily. The procedurerequires average

WARNING: Beforeinspecting,cleaningor servicing themachine,shut offengine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom
spark plug. Failureto follow these instructions can result in serious personalinjury or property
damage.

FORWARDCLUTCH
BAILADJUSTMENT

If the ForwardClutch Bail doesnot func-

tion properly,first check that the forward
drive belt is adjusted properly (see Check-

ing andAdjusting ForwardDriveBelt Ten-
sion). Ifthis failsto correct the problem,

contact Troy-Bilt LLC or your authorized
dealerfor service advice.

CHECKINGANDADJUSTINGRE-
VERSEDRIVEBELTTENSION

(Models634F/634A only)

It is important to maintain correct tension

on the reversedrive belt. A loosebeltwill
causethetines andwheelsto slow down-

or stop completely - eventhough the en-
gine is running at full speed.

Whenchecking belttension, alsocheckthe
beltfor cracks, cuts or frayededgesand
replaceit as soon as possible.

• Check belttension after the first two
hours of break-inoperation andafter every

10 operatinghours.

ToCheckReverseBeltTension:

1. Stopengine, wait for allparts to stop
moving and disconnect spark plug wire.

2. Removescrewin plasticbeltcover and
slide belt cover (which is attachedto for-
ward clutch cable) out of the way.

3. Havean assistant pullthe Reverse
ClutchControl knob all the way out and

hold it in that position. Measurethe length
of the cablewire betweenthe end of the

threadedcableadjuster (A,Figure5-5) and
the end of the Z-fitting (B) to which theca-

ble wire is attached.

4. Thebelttension is idealifthecablewire
length measuresbetween1/8"to 1/4". If it

is lessthan 1/8"(and ifthere is noreverse
actionwhenthe tiller is running),then make

the following adjustments

NOTE:Ifthe lengthis morethan 1/4",noad-

justment isneeded--as longasthe reverse

actionfunctions properly.

5. ReleasetheReverseClutch Control
knob.andthen unthreadthe inner jam nut

(C, Figure5-6) one to two turns. Pull the
threaded cable adjuster (A, Figure 5-6) to
the left until the innerjam nut (C)touches

the bracket.

6. Preventthe innerjam nut (C)from turn-

ing andtighten the outer jam nut (D)

againstthe bracket. Preventthe outerjam

nut (D) from turning and tighten the inner
jam nut (C) againstthe bracket.

7. Measurethe gap by repeatingStep3.

Readjustas neededby repeating Steps5

and 6.

8. Reinstallthebeltcover.

ReplacementBelt Information

If thedrive belt needsto be replaced,see
your local authorized dealeror referto the
Parts List for ordering information. Use
only a factory-authorized belt asan "over-
the-counter" belt maynot perform satis-
factorily. The procedurerequires average
mechanicalability andcommonly available

tools.

ENGINECLEANING

Keepingthe engineclean will help to en-
suresmooth operation and prevent dam-
agefrom overheating. Referto the Engine

Owner'sManualfor enginecleaning ser-
vice intervals and instructions. Besure

thatthe muffler iscool beforeservicing the
engine.

AIRCLEANERSERVICE

Theair cleaner filters dirt anddustout of
theair before it enters the carburetor. Op-
eratingthe enginewith a dirty, clogged air

filter can causepoor performance and
damageto the engine. Neveroperate the
enginewithout the air cleanerinstalled. In-
spectand service theair cleaner more of-
ten if operating in very dusty or dirty

conditions. Referto the engine Owner's
Manualfor air cleanerservice intervalsand

Figure5-5: Measurecablewirelengthto instructions.
checkforcorrectreversebelttension.

ENGINEOILSERVICE

Checkthe engineoil levelbeforeeachuse
and after every five hours of continuous
operation. Runningthe engine when it is
low on oil will quickly ruin the engine.

It is recommendedthat you change the
motor oil after every 10 hoursof operation
and evensooner when operating in ex-
tremelydirty or dusty conditions. Referto
the EngineOwner'sManualfor detailed

service instructions.

A. ToCheckthe EngineOil Level:

1. Parkthe tiller on a level areaand shut
off the engine.

2. Levelthe engine (usethe Depth Regu-

Figure5-6:Movethreadedadjuster(A)toleft
toincreasebelttension.

lator Lever to adjust the engineangle).

20

WARNING: Beforeinspecting,cleaningor servicing themachine,shut offengine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom
spark plug. Failureto follow these instructions can result in serious personalinjury or property
damage.

3. Cleanaround the oil dipstick or oil fill
tube (whichever applies) to prevent dirt
from falling into the crankcase.

4. Onengineswith an oil fill tube, remove
thefill capand add oil (if required) until it

reachesthetop of thefill tube. Reinstall
thefill cap.

5. Onengineswith adipstick, remove it
and wipe it clean. Reinsertthe dipstick,
tighten it securely,and removeit. Add oil
asneededto bring the level upto the FULL
mark. Wipe dipstick cleaneachtime oil
level is checked. Do not overfill. Tighten
dipstick securely.

B. ToChangetheEngineOil:

Changethe engine oil as instructed in the
EngineOwner'sManual.

SPARKPLUGSERVICE

Inspectand cleanor replacethespark plug
after every 100 operating hours or annual-
ly. Referto the EngineOwner'sManualfor
spark plug service instructions.

Insome areas,local law requires using re-
sistor spark plugs to suppress ignition sig-
nals. Iftheenginewas originally equipped
with a resistor spark plug, usethe same
type for replacement.

SPARKARRESTERSCREEN
SERVICE

If theengine muffler is equipped with a
spark arrester screen,removeand clean it
according to the service intervals and in-
structions in the EngineOwner's Manual.

THROTTLELEVERADJUSTMENT

If the enginedoes not respond to various

throttle leversettings, referto the Engine

Owner'sManualfor serviceinformation or
contact your local authorized engine deal-

er.

WARNING: Operators

shallnot tamper with theengine
governorsettings on the
machine;the governorcontrols

the maximum safeoperating

speedto protect the engineand
all moving partsfrom damage
causedbyoverspeed.

Authorizedserviceshall be
sought if a problem exists.

CARBURETOR/GOVERNOR
CONTROLADJUSTMENTS

Thecarburetor was adjusted at thefactory
for best operatingspeed. Referto the En-

gine Owner'sManualfor anyadjustment
information or see your authorizedengine

dealer.

The governor controls the maximumsafe

operatingspeed and protects theengine
and all moving partsfrom damagecaused
by overspeeding. Do not tamperwith the
enginegovernor settings.

OFF-SEASONSTORAGE

Whenthe tiller won't beused for anex-
tendedperiod, prepareitfor storageasfol-

lows:

1. Cleanthe tillerand engine.

2. Doroutine tiller lubrication and check

for loose parts and hardware.

3. Protectthe engineand perform recom-
mendedengine maintenanceby following
thestorage instructions found in the En-
gine Owner's Manual. Besureto protect
thefuel lines,carburetorandfuel tank
from gum deposits byremoving fuel or by
treating fuel with a fuel stabilizer (follow
enginemanufacturer'srecommendations).

4. Store unit in a clean, dry area.

5. Neverstorethetiller with fuel inthefuel
tank in an enclosed areawheregas fumes

could reachan open flame or spark, or
whereignition sourcesare present (space
heaters,hot water heaters,furnaces, etc.).

21

WARNING: Beforeinspecting,cleaningor servicing themachine,shut offengine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom
spark plug. Failureto follow these instructions can result in serious personalinjury or property
damage.

TROUBLESHOOTING

PROBLEM

Enginedoes not start

Engineruns poorly.

Engineoverheats.

Enginedoes not shut off

Wheels and Tineswill not turn

Tines turn, butwheels don't.

Wheels Turn, butTines Don't.

Poortilling performance.

POSSIBLECAUSE

1. Spark plug wire disconnected.
2, EngineThrottle Control Lever incorrectly set,

3. Fueltank empty.

4. Chokecontrol (if so equipped) in incorrect position.
5, Stale gasoline.

6. Dirty air filter.

7. Defective or incorrectly gappedspark plug.
8, Carburetor out of adjustment,

9. Misadjusted throttle control

10. Dirt or water infuel tank.
1, Defective or incorrectly gappedspark plug.

2. Dirty air filter(s).

3. Carburetor out of adjustment.
4, Stale gasoline.

5. Dirt or water infuel tank.

6. Enginecooling system clogged.
1, Enginecooling system clogged.

2. Carburetor out of adjustment.

3. Oil level is low,
1, Misadjusted throttle control or ignition switch.

1, Improper useof controls.

2. Worn, broken, or misadjusted drive belt(s).

3. Internal transmission wear or damage.

4. Bolt loosein transmission pulley.

1. Wheel Drive Pins not inWHEEL DRIVE.
2, Bolt loosein transmission pulley.

3. Internal transmission wear or damage.

1. Tine holder mounting hardware missing.
2, Bolt loosein transmission pulley.

3. Internal transmission wear or damage.

1. Worn tines.
2, Improper DepthRegulator setting.

3. Incorrect throttle setting.

.4. Forward Drive Belt slipptng,

CORRECTION

1. Reconnect wire.

2. Put lever in STARTposition.

3. Add fuel

4. See Engine Owner'sManual.

5. Drainfuel and add fresh fuel.

6. Cleanor replace filter.

7. Inspect spark plug.

8. See Engine ServiceDealer.

9. See Engine ServiceDealer

10. See Engine ServiceDealer.

1. Inspect spark plug (see Engine Owner'sManual).

2. Cleanor replace (see EngineOwner's Manual).

3. See Engine ServiceDealer.

4. Replacewith fresh gasoline,

5. See Engine ServiceDealer.

6. Cleanair cooling system (see EngineOwner's Manual).

1. Cleanair cooling area (seeEngineOwner's Manual).

2. See Engine ServiceDealer.

3. Checkoil level (seeEngine Owner's Manual).

1. See Engine Owner's Manualor EngineService Dealer.

1. Review Sections 3 and 4.

2. See "Checking Drive Belt Tension." Section 5.

3. Contact local dealer or the factory.

4. Tighten bolt.

1. See "Wheel Drive Pins" inSection 3.

2. Tighten bolt.

3. Contact local Dealer or the Factory.

1. Replacehardware.

2. Tighten bolt,

3. Contact local Dealer or the Factory.

1. See"Bolo Tines"(Section 5).

2. See "Tilling Tips & Techniques,"Section 4.

3. SeeSection 4.

4. See "Checking Forward Drive Belt Tension." Section 5,

22

SECTION6:

MODELS630C,634F& 634APARTSLIST

1

13

3

REF
NO.

1 1185469
2 710-0597
3 710-0599
4 710-0874
5 710-3008
6 712-0324
7 712-0429
8 1916707
9 736-0119
10 GW-55013-1
11 GW-55013-2

PART NO.

12

DESCRIPTION

Spirol Pin
Hex Hd.Screw, 1/4-20 x 1
Screw,Self-Tapping,I/4-20 x 1/2
Hex Hd.Screw,5/16-18 x 1-1/4
Hex Hd.Screw,5/16-18 x 3/4

Lock Nut, 1/4-20
Lock Nut,5/16-18

Support Bracket
LockWasher, 5/16
Hood Bracket,Left Hand
Hood Bracket,Right Hand

2O

14

18

4

./ 15 (A) For Model 630C

REF

NO.

12
13

14

15

16
17

18
19
20

PARTNO.

GW-55015
GW-55018
686-04041
686-04043
GW-55088
GW-9384
GW-9534
710-04048
786-04191
618-04000
618-04001

DESCRIPTION

DragBar

DepthRegulator Lever
Tine Hood Assembly(B) (C)
Tine Hood Assembly(A)

Bushing

Spring, Depth Regulator

Spacer

HexHd.FlangeScrew,5/16-18 x 1
Trail Shield Stop Bracket

Transmission Assembly (B) (C)

Transmission Assembly (A)

(B) For Model 634F
(C) For Model 634A

23

MODELS630C,634F & 634A

10

2O

3

16

12

13

I

18

7

14

23

18

24

MODELS630C,634F & 634A

REF
NO.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
21
22
23
25

PARTNO. DESCRIPTION

1916719
1916755

747-04210

1918745
710-0599
710-3008
712-3009
786-04188

GW-55043

786-04200

GW-55044

GW-9855

725-0157
736-3050
786-04040
732-04185
710-0106
710-0216
710-0805
712-0121
712-0291
712-3000
736-0119

CableAssembly, ReverseClutch(B) (C)
UpperHandlebar
Bail,Forward Clutch
CableAssembly,Forward Clutch
Screw,Self-Tapping,I/4-20 x 1/2
Screw,Hex,5/16-18 x 3/4
HexLock Nut,5/16-18
HandlebarSupport

Lower Handlebar
Panel

Tab, ConduitMount

Screw,#10-24 x 2
CableTie

FlatWasher, 3/8
Bracket,Reverse ClutchCable(B)(C)
Spring,Forward Clutch
HexHd.Screw, 1/4-20 x 1-1/4
Screw,Hex,3/8-16 x 3/4
Screw,Hex,5/16-18 x 1-1/2
HexNut,#10-24
HexLock Nut,1/4-20
HexNut,3/8-16
LockWasher,5/16

REF
NO.

1 1918749
2 710-0395
3 712-0267
4 736-0119

(A) For Model 6300
(B) For Model 634F
(C) For Model 634A

PARTNO.

DESCRIPTION

Bumper (C)
HexScrew,5/16-18 x 2-1/4 (C)
Nut, Hex,5/16-18 (C)
LockWasher, 5/16 (C)

25

MODELS6300, 634F & 634A

REF
NO.

1 GW-9517
2 GW-1714
3 GW-50043
4 711-04109
5 GW-1224-1*

-- GW-13250

(A) For Model 6300
(B) For Model 634F
(C) For Model 634A

* Useasrequiredto obtainbetween.005"and.015"allowableend-play.

PARTNO. DESCRIPTION

SnapRing
Bearing,TaperedRoller(withrace)
SupportWasher,Rear
DriveShaft(A)(B)(C)
Shim,RearBearingCap,.010"thick

GW-1224-2*

GW-1224-3*

GW-1224-4*

Shim,sameasabove,except.030"thick
Shim,sameasabove,except.005"thick
Shim,sameasabove,except.062"thick
ShimSet(Incl.thefollowingshims:

two#1224-1,two1224-2& one#1224-4)

26

MODELS630C,634F & 634A

1

3

FRONT

(A) For Model 6300
(B) For Model 634F
(C) For Model 634A

REF
NO.

1
2
3

4
5

6
7
8
9
10
11

* Useas

11

7

4

3

2

PARTNO. DESCRIPTION

GW-9512

1909950

GW-1166-1"

GW-1166-2*

GW-1166-3"

GW-1166-4"

GW-1166-5"

GW-1086
711-04092
711-04088

GW-9305

GW-1132-2

1904278
711-04078

GW-1104

1904279

Retainer,Snap Ring, "E" Type
Retainer,Snap Ring
Shim,0.062"thick
Shim,0.030"thick
Shim,0.015"thick
Shim,0.010"thick
Shim,0.005"thick

BronzeBushing
WheelShaft (B) (C)
WheelShaft (A)

Key,Hi-Pro, 1/4 x 1

Spacer
Worm Gear,WheelShaft

Tiller Shaft
Woodruff Key

Worm Gear,Tiller Shaft

requiredto obtainbetween.005"and.030"allowableend-play.

27

MODELS630C,634F & 634A

4

REF
NO.

1 GW-9727
2 710-04049
3 736-0119
4 1918377
5 1916641
6 GW-50032
7 714-04030

PART NO.

DESCRIPTION

Plug, TransmissionOil Fill 8
Hex Hd.FlangeScrew,5/16-18 x 5/8,Gr. 5 9
LockWasher, 5/16 10
RearCover,Transmission 11
FrontCover, Transmission 12

Gasket,Housing Cover 13
OilSeal, DriveShaft 14

10

12

10

3

14

* Included with transmission when purchasedas an assembly only.

Removeand discard when installing the transmission on tiller.

REF

NO.

PARTNO.

721-04031
619-04013
721-04036
736-3008"
718-04008
710-04048
710-3008

DESCRIPTION

OilSeal,WheelShaft
Transmission Housing Assembly
OilSeal,TineShaft
Washer,Flat,.344 x .750x .120
RearBearingCap

HexHd.FlangeScrew,5/16-18 x 1
HexHd.FlangeScrew,5/16-18 x 3/4

13

28

Hold Tines With Blunt End Toward You

RIGHT-HANDTINE LEFT-HAND TINE

NOTE:IdentifyLeftandRightsidesoftiller bystandingin
operatorpositionandfacingdirectionofforwardtravel.

2

_--,_;b_ WHEELSHAFT

) 3

MODELS6300, 634F & 634A

1

REF
NO.

1
2
3
4
5
6

8
9

PARTNO.

710-0514
GW-50049-02
712-3000
710-0347
GW-50049-01
1916747
1915075
1917486
1917487
GW-55095-01
GW-55095-02
GW-9380

2

TINE SHAFT

DESCRIPTION

Hex Hd.Screw,3/8-16 x 1,Grade5
Single BoloTine- Left Hand(A) (B) (C) --
Hex Lock Nut,3/8-16
Hex Hd.Screw,3/8-16 x 1-3/4
Single BoloTine- Right Hand(A) (B) (C) --
TineHolder (B) (C)
TineHolder (A)
Wheel& Tire Ass'y-- Left/Right Side(B)
Wheel& Tire Ass'y-- Left/Right Side(C)
Wheel& Tire Ass'y -- LeftSide Only (A) _
Wheel& Tire Ass'y-- Right SideOnly (A)
ClevisPin, .312"x 1-3/4"

REF

NO.

PARTNO.

10 GW-9338

GW-1901

642-0029

642-0030

642-0031

642-0032

3

(A) For Model 6300
(B) For Model 634F
(C) For Model 634A

DESCRIPTION

Hair Pin Cotter
BoloTine ReplacementSet(Incl. eight

right-hand tines, eightleft-hand tines and
requiredhardware. (A) (B) (C)

Left HandTine Assembly (Incl. onetine
holder andeight tines, assembled)(B) (C)

Right HandTineAssembly (Incl. onetine
holder andeight tines, assembled)(B) (C)

Left HandTine Assembly (Incl. onetine
holder andeight tines, assembled)(A)

Right HandTineAssembly (Incl. onetine
holder andeight tines, assembled)(A)

29

MODELS630C,634F & 634A

2(B, C)
37 (A)

32

REVERSE

UTCHCABLE

I_i5 •z"

i

38

3O

24

16

16

24

30

MODELS630C,634F & 634A

(A) For Model 6300
(B) For Model 634F
(C) For Model 634A

REF
NO.

1
2
3

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
30
31
32
33
34
35
36
37
38
39
40
41
42
43

PARTNO. DESCRIPTION

736-0159
714-0139

1916531
GW-55035
1916532
GW-55031
1916535
1916652
1916657
GW-55037
1916658
1916660
1916724
1916725
1916726
1916794
1916795
1917326
1917746
1918731

1918744
710-0117
710-0237
710-0376
710-04049
710-0520
710-0599
710-3103
712-3000
712-3009
736-0119
736-3050
736-3090
748-04026

GW-1138-2

GW-50027

GW-55034

GW-55049

GW-9090

GW-9301
736-3078

GW-9944

GW-55039
710-0805
712-3010
710-0157

FlatWasher, 5/16
Key,3/16"x 2"(B) (C)
Pulley,EngineDrive(B) (C)

Pulley,EngineDrive(A)
Transmission Pulley (B) (C)
Transmission Pulley

Pulley,ReverseIdler(B) (C)

Guard,Belts/Pulleys

ForwardDrive Belt(B) (C)

ForwardDrive Belt(A)

ReverseDriveBelt (B) (C)

BeltCover

ReverseReturn Spring (B) (C)

BeltGuide(B)(C)

ForwardBelt Guide(B) (C)

EngineBracket, Left

EngineBracket,Right

Bracket,Belt Cover

ShoulderWasher

ReverseIdler Arm (B)(C)

ForwardIdler Lever

HexHd.Screw, 5/16-24 x 1(B) (C)

HexHd.Screw, 5/16-24 x 5/8

HexHd.Screw, 5/16-18 x 1

HexHd.Screw, 5/16-18 x 5/8

HexHd.Screw, 3/8-16 x 1-1/2

Screw,Self-Tapping, 1/4-20 x 1/2

HexHd.Screw, 5/16-18 x 2(B) (C)

Lock Nut,3/8-16

Lock Nut,5/16-18 (B) (C)

LockWasher,5/16

FlatWasher, 3/8

FlatWasher

Spacer(A)

Shim

Support Washer

ForwardReturnSpring

Bracket,Cable Mounting

ForwardIdler Pulley

Key,3/16"x 1"

FlatWasher

BellevilleWasher

ForwardBelt Guide(A)

HexHd.Screw, 5/16-18 x 1-1/2 (A)

HexNut,5/16-18 (A)

HexHd.Screw, 5/16-24 x 3/4(A)

31

TROY-BILT TILLER LIFETIME LIMITED WARRANTY

WHAT PRODUCT
IS COVERED

WHAT IS COVERED
BY THIS WARRANTY

WHAT IS NOT
COVERED BYTHIS
WARRANTY

All Troy-Bilt branded rear tine walk-behind tillers with gear drive transmissions.

This warranty begins on the date of purchase and is warranted by Troy-Bilt LLC for the life of the

tiller, to the original purchaser only.

Troy-Bilt LLC will, at its option, repair or replace any part found to be defective in material or

workmanship without charge for parts and labor

This limited lifetime warranty also applies to non-powered attachments and accessories.
Powered attachments and accessories are warranted separately by their manufacturers. Refer
to the applicable manufacturer's warranty on these items for terms and conditions.

This warranty does not apply to parts that have been damaged by accident, alteration, misuse,
abuse, neglect, improper maintenance, vandalism, theft, fire, water, or damage because of peril

or other natural disaster.

The following items are not covered after the first year of this residential use limited warranty:
belts, batteries, bushings, seals, tines, tires, wheels, paint, appearance items, and similar items

that are normally replaced through periodic maintenance.

Charges for pick-up, delivery, and service calls are not covered by this warranty.

Service completed by someone other than an authorized service dealer is not covered by this
warranty.

Parts that are not genuine Troy-Bilt LLC service parts are not covered by this warranty.

The engine is warranted separately by the engine manufacturer. Refer to the engine
manufacturer's warranty for terms and conditions.

LIMITED
COMMERCIAL
USE WARRANTY

HOW TO OBTAIN
SERVICE

The provisions set forth in this warranty provide the sole and exclusive remedy arising from the sale. Troy-Bilt LLC shall

not be liable for any incidental or consequential damage or expense of any kind, including but not limited to cost of

equipment rental, loss of profits, or costs of hiring services to perform tasks normally performed by the equipment.

Any implied warranties, including any implied warranty of merchantability or fitness for a particular purpose, shall be limited

in duration to the period of ownership by the original purchaser (and a maximum of 90 days from the date of sale if the tiller is

Some states do not allow the exclusion or limitation of incidental or consequential damages, or limitations on how long an

This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

If used for commercial, institutional, industrial, rental, or demonstrator purposes, the warranty
on the tiller is limited in duration to 90 days from the date of purchase.

This warranty does not apply to parts that have been damaged by accident, alteration, misuse,
abuse, neglect, improper maintenance, vandalism, theft, fire, water, or damage because of

peril or other natural disaster.

Warranty service is available, with proof of purchase, through your local authorized service
dealer. To locate a dealer in your area, consult your Yellow Pages, or contact Troy-Bilt LLC at
P.O. Box 361131, Cleveland, Ohio 44136-0019, 1-800-520-5520, or log on to our Web site at
www.troybilt.com.

purchased for commercial or other non-residential use).

implied warranty lasts, so the above exclusions or limitations may not apply to you.

For customer assistance, contact your nearest authorized dealer, or contact us at:

TROY-BILT LLC, P.O. Box 361131, Cleveland, Ohio 44136-0019, 1-800-520-5520