Maintenance Instructions
CLEANING/
CHECKING/SERVICING
70
Hydrostatic Transmission Cooling Fins
Keeping the cooling ns on the hydrostatic trans-
missions clean and free of obstruction is essential
to avoid overheating the transmission uid and
short ening transmission life. The cooling ns should
be checked every 100 hours and cleaned if neces-
sary.
To clean the ns, use compressed air and/or a pres-
sure washer. The cooling ns extend all the way
around the housing–the ns underneath need to be
clean as well as the more visible ns above. Also,
pay close attention to the area under the drive pul-
ley.
IMPORTANT: In case an oil leak develops on the
input shaft, the cooling fan blowing dusty air and oil
on the transmission will quickly pack the cooling
ns with oily dirt. If this condition occurs, replace
the seal immediately to avoid overheating and dam-
aging the transmission. The input shaft assembly
and seal are easily replaced without removing the
transmission from the machine.
An additional procedure in maintaining transmission
cooling is to inspect the cooling fans. Replace the
fan(s) if blades are missing or damaged.
Cooling Fins
Cooling Fan
Hydrostatic Transmission Cooling Fins
CHECKING/SERVICING
DANGER
To prevent accidental starting of the en-
gine when servicing or adjusting the ma-
chine, remove the key from the ignition
switch and disconnect the electric plug
on the fuel shut-o solenoid.
Engine Cooling System
Coolant Level
WARNING
NEVER remove the radiator pressure cap
when the engine is hot — hot water could
spray and cause a burn if the cap is taken
o too soon.
Check the coolant level in the coolant recovery tank
and maintain the coolant level between the FULL
and LOW marks on the recovery tank. When the
engine is cold, the coolant level should be at or
slightly above the LOW mark on the recovery tank.
If the coolant level is low, remove the radiator cap
and ll to the overow port level and then ll the re-
covery tank above the LOW mark. Use a pre-mixed
50/50 solution of antifreeze (ethylene glycol) and
distilled water to ll the cooling system.
IMPORTANT: The coolant solution of antifreeze
and distilled water must be thoroughly pre-mixed
before putting it in the engine (adding pure anti-
freeze into the radiator may cause damage to the
engine by causing overheating).
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