Walker MC19 Lawn Mower User Manual


 
59
Maintenance Instructions
CLEANING/
CHECKING/SERVICING
GHS Exhaust Screen
Refer to Cleaning the GHS Exhaust Screen in Op-
erating Instructions.
Hydrostatic Transmission Cooling Fins
Keeping the cooling ns on the hydrostatic transmis-
sions 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 necessary.
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 pulley.
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 Fan
Cooling Fins
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 spark plug
wires.
Security of Air Filtration Components
NOTE: The following inspection is only an exter nal
inspection and should be done without “dis-
turbing” the ltration components.
On a daily basis, visually inspect the external condi-
tion of the complete air cleaner system. The follow-
ing items should be inspected:
1. Check the Enginaire™ air cleaner canister for
damage. Make sure the cover is in place and
the cover latch is secure - do not run the engine
without the air cleaner cover in place and se-
cure.
2. Inspect the air intake hose for cracks, nicks,
cuts, etc., and check the hose clamps for tight-
ness.
3. Check to make sure the air lter restriction
gauge is in place and hose connections are
secure.
Battery
NOTE: For initial battery service during setup, re fer
to Battery Service in Assembly Instructions.
IMPORTANT: Make sure battery is securely mount-
ed in the frame. A loose battery may cause damage
to the case resulting in acid leakage and severe dam-
age to the machine. A hazard may be created by
damage to critical working parts and safety systems.
Electrolyte Level
The battery electrolyte level should be checked af-
ter every 25 hours of operation. To check electro-
lyte level:
1. Remove battery cell ller caps.
2. Check the electrolyte level. If the level is below
the bottom of the vent well, ll with drinking wa-
ter to the bottom of the vent wells [1/4 to 1/2 in.
(6 to 13 mm) above the plates].
3. Replace ller caps.