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17

WARNING: 

Before 

inspecting, cleaning or servicing 
the machine, shut off engine, 
wait for all moving parts to come 
to a complete stop, disconnect 
spark plug wire and move wire 
away from spark plug. Remove 
ignition key on electric start 
models.
Failure to follow these 
instructions can result in serious 
personal injury or property 
damage.

NOTES

1 -

Check after first 2 hours of break-in operation.

2 -

Before each use.

3 -

Every 5 operating hours.

4 -

Every 10 operating hours.

5 -

Every 30 operating hours.

6 - 

Change more frequently in dusty conditions.

7 - 

See Engine Owner’s Manual for service 
recommedations.

8 -

Whichever time interval occurs first.

9 - 

Change after first 2 hours of break-in 

MAINTENANCE SCHEDULE

PROCEDURE

NOTES

Check motor oil level

2, 3

Clean engine

2, 7

Check drive belt tension

1, 4

Check nuts and bolts

1, 4

Change motor oil

4, 6, 9

Lubricate tiller

4

Service engine air cleaner system

7

Check gear oil level in transmission 1, 5

Check tines for wear

5

Check air pressure in tires 
(if unit has pneumatic tires)

5

Service spark plug

7

TILLER LUBRICATION

After every 10 operating hours, oil or 
grease the lubrication points shown in 
Figure 5-1 and described below.

Use clean lubricating oil (#30 weight motor 
oil is suitable) and clean general purpose 
grease (grease containing a metal lubricant 
is preferred, if available).

•  Remove the wheels, clean the wheel shaft 
(A, Fig.  5-1) and apply a thin coating of 
grease to the wheel shaft.

•  Grease the back, front and sides of the 
depth regulator lever (B, Fig. 5-1).

•  Remove the tines and clean the tine shaft 
(C, Fig. 5-1).  Use a file or sandpaper to 
gently remove any rust, burrs or rough 
spots (especially around holes in shaft).   
Apply grease to ends of shaft before install-
ing tines.

•  Oil the threads on the handlebar height 
adjustment screws and the handlebar 
attaching screws (D, Fig. 5-1).

B

D

A

C

Figure 5-1

If a cover is leaking, check for loose 
screws. If the screws are tight, a new 
gasket or oil seal may be required. 

If the leak is from around a shaft and oil 
seal, the oil seal probably needs to be 
replaced.  See your authorized dealer or 
contact the factory for service or advice.

IMPORTANT: Never operate the tiller if 
the transmission is low on oil.  Check 
the oil level after every 30 hours of 
operation and whenever there is any oil 
leakage. 

CHECK HARDWARE

Check for loose or missing hardware af-
ter every 10 operating hours and tighten 
or replace (as needed) before reusing 
tiller

Be sure to check the screws underneath 
the tiller hood that secure the transmis-
sion cover and the Depth Regulator Lever 
to the transmission.

CHECK TIRE PRESSURE

(Models with pneumatic tires)

Check the air pressure in both tires.  The 
air pressure should be between 15 PSI 
and 20 PSI (pounds per square inch).  

Keep both tires equally inflated to help 
prevent machine from pulling to one 
side.

TRANSMISSION
GEAR OIL SERVICE

Check the transmission gear oil level 
after every 30 hours of operation or 
whenever you notice any oil leak.  Oper-
ating the tiller when the transmission is 
low on oil can result in severe damage.

A.  To Check the Transmission 
Gear Oil Level:
1. 
Check the gear oil level when the 
transmission is cool.  Gear oil will 
expand in warm operating temperatures 
and this expansion will provide an incor-
rect oil level reading.

2. With the tiller on level ground, pull the 
Depth Regulator Lever all the way up.

3.  Remove the oil fill plug (A, Fig. 5-2) 
from the transmission housing and look 
inside the oil fill hole to locate the main 
drive shaft situated below the hole.

CHECK FOR OIL LEAKS

Before each use, check the tiller for signs of 
an oil leak — usually a dirty, oily accumu-
lation either on the unit or on the floor.

A little seepage around a cover or an oil 
seal is usually not a cause for alarm. How-
ever, if the oil drips overnight, then imme-
diate attention is needed.  Ignoring an oil 
leak can result in severe transmission 
damage!

SECTION 5:  MAINTENANCE

Summary of Contents for 21A-634F063

Page 1: ...tem 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 avail...

Page 2: ...erence please copy the model number and the serial number of the equipment in the space below ENGINE INFORMATION The engine manufacturer is responsible for all engine related issues with regard to performance power rating specifications warranty and service Please refer to the engine manufacturer s Owner s Operator s Manual packed separately with your unit for more information CALLING CUSTOMER SUP...

Page 3: ...s open flames and sparks away from the fuel tank and fuel container d Fill fuel tank outdoors with extreme care Never fill fuel tank indoors Use a funnel or spout to prevent spillage e Replace all fuel tank and container caps securely f If fuel is spilled do not attempt to start the engine but move the ma chine away from the area of spillage and avoid creating any source of ig nition until fuel va...

Page 4: ...leasing whichever clutch control is engaged Do not attempt to restrain the tiller 15 Do not overload the tiller s capacity by attempting to till too deeply at too fast a rate 16 Never operate the tiller at high trans port speeds on hard or slippery surfaces Look behind and use care when backing up 17 Do not operate the tiller on a slope that is too steep for safety When on slopes slow down and mak...

Page 5: ...IELDS IN PLACE AND WORKING NEVER ALLOW CHILDREN OR UNINSTRUCTED ADULTS TO OPERATE TILLER SHUT OFF ENGINE AND DISCONNECT SPARK PLUG WIRE BEFORE MANUALLY UN CLOGGING TINES OR MAKING REPAIRS KEEP BYSTANDERS AWAY FROM MACHINE KEEP AWAY FROM ROTATING PARTS USE EXTREME CAUTION WHEN REVERSING OR PULLING THE MACHINE TOWARDS YOU Operating Symbols Varioussymbols shownhere withworddescriptions maybeusedonthe...

Page 6: ...se Parts List contact your local dealer or the factory items are missing or dam aged NOTE Use the screw length template Fig 2 1 to identify screws Loose Parts List Qty Description 1 Handlebar Support see A Fig 2 2 1 Handlebar Assembly see K Fig 2 2 Hardware bag contents 1 Slotted hd screw 10 24 x 2 1 Hex hd screw 1 4 20 x 1 1 4 6 Hex hd screw 5 16 18 x 1 1 2 2 Hex hd screw 3 8 16 x 3 4 2 Flat Wash...

Page 7: ...in Wheel Drive Pins in Section 3 STEP 4 INSTALL FORWARD CLUTCH CABLE 1 Attach the forward clutch cable bracket P Fig 2 4 to the handlebar support A with a 1 4 20 x 1 1 4 hex hd screw R and 1 4 20 hex locknut S Tighten se curely 2 Carefully unwrap the forward clutch ca ble cable without an attached knob from its shipping position and slide the thin ca ble wire T Fig 2 4 into the slot in the ca ble ...

Page 8: ...wrap the reverse clutch cable CC Fig 2 8 and Fig 2 9 from its shipping po sition and route it up to the handlebar Be sure that the cable is routed beneath the Forward Clutch Bail 2 Using the two self tapping screws AA Fig 2 8 secure the reverse cable mount ing bracket BB to the handlebars as shown 3 Insertthe cable CC Fig 2 8 through the slot in the cable bracket and position the flat side of the ...

Page 9: ...e engine is run with out oil 1 Refer to the separate Engine Owner s Manual for engine oil specifications and capacities 2 With the tiller on level ground move the Depth Regulator Lever FF Fig 2 10 up or down until the engine is level 3 Add motor oil as described in the En gine Owner s Manual 4 Move the Depth Regulator Lever all the way down until the highest notch is en gaged This places the tines...

Page 10: ...Models 634F and 634B is engaged Use the FREEWHEEL mode only when the engine is not running In FREEWHEEL the wheel drive pins are placed only through the holes in the wheel shaft not the wheel hubs thus allowing the wheels to turn freely when you manually move the tiller To place the wheels in WHEEL DRIVE or FREEWHEEL 1 Stop engine disconnect spark plug wire from spark plug and allow engine to cool...

Page 11: ...ob F Figure 3 4 out The wheels and tines will rotate in a reverse direction 4 Release the control knob to disengage stop the wheels and tines the engine will continue to run DEPTH REGULATOR LEVER This lever G Figure 3 5 controls the till ing depth of the tines Pull the lever back and slide it up or down to engage the notched height settings The travel position highest notch raises the tines approx...

Page 12: ...he directions in the separate Engine Owner s Manual Follow all instructions and safety rules carefully 8 Attach spark plug wire to spark plug Starting the Engine The following steps describe how to start and stop the engine WARNING Do not attempt to engage the tines or wheels until you have read all of the operating instructions in this Section Also review the safety rules in Section 1 Safety and ...

Page 13: ...ndlebars to try to make the tiller till more deeply This prevents the wheels from holding the tiller back and can allow the tines to rapidly propel the tiller forward which could result in loss of control property damage or personal injury 5 For reverse motion of the wheels and tines Models 634F 634B only a Look behind and exercise caution when operating in reverse Do not till while in reverse b S...

Page 14: ...s will attempt to propel the tiller often causing the tiller to skip rapidly across the ground Sometimes slight downward pressure on the handlebars will help get through a particularly tough section of sod or unbroken ground but in most cases this won t be necessary Avoid trying to dig too deeply too quickly especially when busting sod or when tilling soil that hasn t been tilled for some time Use...

Page 15: ...ction 1 Safety of this manual 2 We recommend tilling up and down slopes rather than terracing Tilling vertically on a slope allows maximum planting area and also leaves room for cultivating IMPORTANT When tilling on slopes be sure the correct oil level is maintained in the engine check every one half hour of operation The incline of the slope will cause the oil to slant away from its normal level ...

Page 16: ...DING THE TILLER WARNING Loading and unloading the tiller into a vehicle is potentially hazardous and we don t recommend doing so unless absolutely necessary as this could result in personal injury or property damage However if you must load or unload the tiller follow the guidelines given next Before loading or unloading stop the en gine wait for all parts to stop moving disconnect the spark plug ...

Page 17: ...f a cover is leaking check for loose screws If the screws are tight a new gasket or oil seal may be required If the leak is from around a shaft and oil seal the oil seal probably needs to be replaced See your authorized dealer or contact the factory for service or advice IMPORTANT Never operate the tiller if the transmission is low on oil Check the oil level after every 30 hours of operation and w...

Page 18: ...ssion 6 Reinstall the wheel 7 Install a new gasket do not reuse old gasket and reinstall the transmission cov er 8 Refill the transmission using GL 4 gear oil SAE 85W 140 or SAE 140 9 Refill the engine with motor oil and re plenish the fuel tank with gasoline BOLO TINES The bolo tines will wear with use and should be inspected at the beginning of each tilling season and after every 30 oper ating h...

Page 19: ...rew D c Unhook the top of the spring from the Forward Clutch Bail d Use pliers to prevent the adjuster B from turning and turn the slotted screw lo cated inside the spring clockwise viewed from operator s position to increase ten sion on the spring Turn the screw coun terclockwise to decrease tension Once adjusted reattach the spring to the For ward Clutch Bail e Repeat Steps 2 and 3 to re measure...

Page 20: ...t the bracket 7 Measure the gap by repeating Step 3 Readjust as needed by repeating Steps 5 and 6 8 Reinstall the belt cover Replacement Belt Information If the drive belt needs to be replaced see your local authorized dealer or refer to the Parts List for ordering information Use only a factory authorized belt as an over the counter belt may not perform satis factorily The procedure requires aver...

Page 21: ...s on the machine the governor controls the maximum safe operating speed to protect the engine and all moving parts from damage caused by overspeed Authorized service shall be sought if a problem exists CARBURETOR GOVERNOR CONTROL ADJUSTMENTS The carburetor was adjusted at the factory for best operating speed Refer to the En gine Owner s Manual for any adjustment information or see your authorized ...

Page 22: ... oil level see Engine Owner s Manual Engine does not shut off 1 Misadjusted throttle control or ignition switch 1 See Engine Owner s Manual or Engine Service Dealer Wheels and Tines will not turn 1 Improper use of controls 1 Review Sections 3 and 4 2 Worn broken or misadjusted drive belt s 2 See Checking Drive Belt Tension Section 5 3 Internal transmission wear or damage 3 Contact local dealer or ...

Page 23: ...t Hand 11 GW 55013 2 Hood Bracket Right Hand 12 GW 55015 Drag Bar 13 GW 55018 Depth Regulator Lever 14 1916623 Tine Hood Assembly B C GW 55024 Tine Hood Assembly A 15 GW 55088 Bushing 16 GW 9384 Spring Depth Regulator 17 GW 9534 Spacer 18 710 04048 Hex Hd Flange Screw 5 16 18 x 1 19 618 04000 Transmission Assembly B C 618 04001 Transmission Assembly A 20 1916569 Flap Stop Bracket REF NO PART NO DE...

Page 24: ...24 MODELS 630C 634F 634B 5 10 2 5 15 1 12 16 21 3 13 20 4 4 11 25 7 22 7 25 20 6 8 20 6 23 14 18 18 7 9 ...

Page 25: ...ower Handlebar 10 GW 55102 Panel 11 GW 55044 Tab Conduit Mount 12 GW 9855 Screw 10 24 x 2 13 725 0157 Cable Tie 14 736 3050 Flat Washer 3 8 15 1916674 Bracket Reverse Clutch Cable B C 16 1916712 Spring Forward Clutch 17 710 0106 Hex Hd Screw 1 4 20 x 1 1 4 18 710 0216 Screw Hex 3 8 16 x 3 4 20 710 0805 Screw Hex 5 16 18 x 1 1 2 21 712 0121 Hex Nut 10 24 22 712 0291 Hex Lock Nut 1 4 20 23 712 3000 ...

Page 26: ...3 GW 50043 Support Washer Rear 4 711 04109 Drive Shaft A B C 5 GW 1224 1 Shim Rear Bearing Cap 010 thick GW 1224 2 Shim same as above except 030 thick GW 1224 3 Shim same as above except 005 thick GW 1224 4 Shim same as above except 062 thick GW 1325C Shim Set Incl the following shims two 1224 1 two 1224 2 one 1224 4 A For Model 630C B For Model 634F C For Model 634B 3 4 5 2 2 1 ...

Page 27: ...im 0 030 thick GW 1166 3 Shim 0 015 thick GW 1166 4 Shim 0 010 thick GW 1166 5 Shim 0 005 thick 4 GW 1086 Bronze Bushing 5 711 04092 Wheel Shaft B C 711 04088 Wheel Shaft A 6 GW 9305 Key Hi Pro 1 4 x 1 7 GW 1132 2 Spacer 8 1904278 Worm Gear Wheel Shaft 9 711 04078 Tiller Shaft 10 GW 1104 Woodruff Key 11 1904279 Worm Gear Tiller Shaft A For Model 630C B For Model 634F C For Model 634B 1 2 3 4 7 7 4...

Page 28: ...Oil Seal Drive Shaft 8 721 04031 Oil Seal Wheel Shaft 9 619 04013 Transmission Housing Assembly 10 721 04036 Oil Seal Tine Shaft 11 736 3008 Washer Flat 344 x 750 x 120 12 714 04008 Rear Bearing Cap 13 710 04048 Hex Hd Flange Screw 5 16 18 x 1 14 710 3008 Hex Hd Flange Screw 5 16 18 x 3 4 REF NO PART NO DESCRIPTION 2 2 1 5 4 6 6 8 8 9 10 10 12 3 14 13 11 7 Included with transmission when purchased...

Page 29: ...acement Set Incl eight right hand tines eight left hand tines and required hardware A B C 642 0029 Left Hand Tine Assembly Incl one tine holder and eight tines assembled B C 642 0030 Right Hand Tine Assembly Incl one tine holder and eight tines assembled B C 642 0031 Left Hand Tine Assembly Incl one tine holder and eight tines assembled A 642 0032 Right Hand Tine Assembly Incl one tine holder and ...

Page 30: ... 634B 9 24 28 20 30 25 27 1 1 11 5 17 19 28 1 12 10 14 16 38 19 39 38 3 31 23 2 B C 37 A 40 1 28 43 7 8 37 19 39 33 4 38 34 FORWARD CLUTCH CABLE 35 42 28 24 22 22 24 6 13 21 28 16 29 18 36 23 41 REVERSE CLUTCH CABLE 15 28 ...

Page 31: ...Idler Arm B C 18 1918744 Forward Idler Lever 19 710 0117 Hex Hd Screw 5 16 24 x 1 B C 20 710 0237 Hex Hd Screw 5 16 24 x 5 8 21 710 0376 Hex Hd Screw 5 16 18 x 1 22 710 04049 Hex Hd Screw 5 16 18 x 5 8 23 710 0520 Hex Hd Screw 3 8 16 x 1 1 2 24 710 0599 Screw Self Tapping 1 4 20 x 1 2 25 710 3103 Hex Hd Screw 5 16 18 x 2 B C 26 712 3000 Lock Nut 3 8 16 27 712 3009 Lock Nut 5 16 18 B C 28 736 0119 ...

Page 32: ... commercial institutional industrial rental or demonstrator purposes the warranty COMMERCIAL on the tiller is limited in duration to 90 days from the date of purchase USE WARRANTY 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 HOW TO OBTAIN ...

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