Maintenance - Troy-Bilt Tuffy 630B Operator's Manual

Rear-tine tiller
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Maintenance
Before
inspecting,
cleaning
or
servicing the machine, shot 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 instructionscan
result in serious personalinjury or prop-
erty damage.
MAINTENANCE SCHEDULE
PROCEDURE
NOTES
Check motor oil level
2, 3
Cleanengine
2, 7
Check drivebelttension
1,4
Check nuts andbolts
1,4
Change motoroi_
4, 6, 9
Lubricate tiller
4
Service engineair cleanersystem
7
Check gearoil levelintransmission
1,5
Check tinesfor wear
5
Check air pressurein tires (if unit
haspneumatic tires)
5
Service sparkptog
7
NOTES
1
- Check afterfirst 2hours of break-inoperation,
2 - Beforeeachuse.
3 - Every5 operatinghours,
4 - Every10operatinghours,
5 - Every30 operatinghours,
6 - Change morefrequently in dustyor dirty
conditions,
7 - SeeEngineOwner's Manua!forservice
recommendations.
8 - Whichever time intervaloccursfirst,
9 - Change after first 2 hoursof break-in
operation,
TILLER LUBRICATION
After every 10 operating hours, oil or
grease the lubrication points shown in
Figure5-1 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).
• Removethe wheels, cleanthe wheel
shaft (A, Fig. 5-1) and apply a thin
coating of greaseto the wheel shaft.
• Greasethe back, front and sides of the
depth regulator lever (B, Fig. 5-1).
• Removethe tines and cleanthe 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 greaseto ends of shaft before
installing tines.
• Oil the threads on the handlebar height
adjustment screws and the handlebar
attaching screws (D, Fig. 5-1).
D
A
Figure5-1
CHECKFOROIL LEAKS
Beforeeach use, check the tiller for signs
of an oil leak- usually a dirty, oily accu-
mulation either on the unit or on the floor.
A little seepagearound 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!
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 needsto be
replaced. See your authorized dealer or
contact the factory for service or advice.
IMPORTANT:Never operate the tiller ifthe
transmission is low on oil. Checkthe oil
levelafter every 30 hours of operation and
whenever there is any oil leakage.
CHECKHARDWARE
Checkfor loose or missing hardwareafter
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 transmission
cover and the Depth Regulator Leverto the
transmission.
CHECKTIRE PRESSURE
(Modelswith pneumatictires)
Checkthe air pressure in both tires. The
air pressure should be between 15-20 PSI
(pounds per square inch).
Keep both tires equally inflated to help
prevent machine from pulling to one side.
TRANSMISSIONGEAR
OILSERVICE
Checkthe transmission gear oil level after
every 30 hours of operation or whenever
you notice any oil leak. Operating the tiller
when the transmission is low on oil can
result in severe damage.
A. To Checkthe Transmission
Gear Oil Level:
1. Checkthe gear oil level when the trans-
mission is cool. Gearoil will expand in
warm operating temperatures and this
expansion will provide an incorrect oil
levelreading.
2. With the tiller on level ground, pull the
Depth Regulator Lever all the way up.
3. Removethe 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.

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