Maintenance - Troy-Bilt TUFFY 634A Operator's Manual

SECTION 5: MAINTENANCE
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.
Failureto follow these
instructions can result in serious
personal injury or property
damage.
MAINTENANCESCHEDULE
PROCEDURE
Check motor oil level
Clean engine
Check drive belt tension
Check nuts and bolts
Change motor oil
Lubricate tiller
Service engine air cleaner system
Check gear oil level in transmission
Checktines for wear
Check air pressure in tires
(if unit has pneumatic tires)
Service spark plug
NOTES
NOTES
2,3
2,7
1,4
1,4
4,6,9
4
7
1,5
5
5
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 Changemore frequently in dusty conditions.
7 - See Engine Owner's Manual forservice
recommendations.
8 - Whichever time interval occurs firsL
g - Changeafter first 2 hours of break-in
TILLER LUBRICATION
After every 10 operating hours, oil or
grease the lubrication points shown in
Figure5-1 and described below.
Useclean lubricating oil (#30 weight motor
oil is suitable) and clean general purpose
grease (greasecontaining a metal lubricant
is preferred, if available).
• Removethe wheels,cleanthe wheel shaft
(A, Fig. 5-1) and apply a thin coating of
grease to the wheel shaft.
• Greasethe back, front and sides of the
depth regulator lever (B, Fig. 5-1).
• Removethe tines and clean the tine shaft
(C, Fig. 5-1). Usea file or sandpaperto gen-
tly remove any rust, burrs or rough spots
(especiallyaround holes in shaft). Apply
grease to ends of shaft before installing
tines.
• Oil the threads on the handlebar height
adjustment screws and the handlebar
attaching screws (D, Fig. 5-1 ).
Figure 5-1
CHECKFOR OIL LEAKS
Beforeeach use, checkthe tiller for signs of
an oil leak-- usually a dirty, oily accumu-
lation 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 off
leak can result in severe transmission
damage!
17
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. Seeyour authorized dealer or
contact the factory for service or advice.
IMPORTANT: N ever operatethe tiller if
the transmission is low on oil. Checkthe
oil level after every 30 hours of
operation and whenever there is any oil
leakage.
CHECK HARDWARE
Checkfor loose or missing hardwareaf-
ter every 10 operatinghours and tighten
or replace(as needed) before reusing
tiller
Be sure to checkthe screws underneath
the tiller hood that securethe transmis-
sion cover and the Depth RegulatorLever
to the transmission.
CHECKTIRE PRESSURE
(Models with pneumatic tires)
Checkthe 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
GEAROIL SERVICE
Checkthe 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 Checkthe Transmission
Gear Oil Level:
1. Checkthe gear oil level when the
transmission is cool. Gear oil will
expand in warm operatingtemperatures
and this expansion will provide an incor-
rect oil level reading.
2. With the tiller on levelground, pull the
Depth Regulator Leverall 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.