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58
Maintenance Instructions
CHECKING/SERVICING
Blade Balancer
Blade Balanced on Magnetic
Wall-Mounted Balancer
7. Mount the blade with wing tips pointing up into
the housing. Reinstall the blade, washer, and
bolt.
Tighten the bolt to 64 ft-lb (87 N
·
m).
Drive Belts
Raise the body and inspect the condition of the five
(5) drive belts
after every 25 hours
of operation --
engine alternator (1), PTO drive (3), ground drive (1).
If the belts show
signs of cracking or deteriorat-
ing,
the belts should be
replaced.
Refer to
REPLAC-
ING/REPAIR ING
the
Drive Belts
in this section.
Fuel Lines and Clamps
Every year,
inspect the fuel lines from the tanks to
engine for deterioration or damage. Also, inspect the
fuel line
clamps for tightness.
Good preventive
maintenance calls for complete
replacement
of fuel
lines and clamps
every two (2) years.
NOTE:
This procedure is of special importance for
the diesel engine due to poor performance when air
is injected with the fuel.
Radiator Hoses and Clamps
Inspect the radiator hoses
every 200 hours
for dete-
rioration or damage. Also check the tightness of the
hose clamps. Good preventive maintenance calls for
complete
replacement
of the radiator hoses and
clamps
every two (2) years.
PTO U-Joints
The PTO U-joints should be inspected
yearly
for
looseness and wear. If either is noticed, the respec-
tive shaft or tube should be replaced. A worn U-joint
can cause vibration and extensive damage to the
PTO and the whole machine.
Blade Brake Action
WARNING
It is important to check and maintain blade
brake action for safe operation of the ma-
chine.
Check the function of the cutter blade brake by en-
gaging the blade clutch (PTO), operating the engine
at full throttle, then disengaging the clutch and mea-
suring how quickly the blades stop. Watch the rota-
tion of the blade drive shaft as a visual indi cation that
movement has stopped. If the brake is
working
properly, all rotation will stop five (5) seconds af-
ter disengagement
of the clutch. If the brake system
malfunctions -- blades do not stop in five (5) seconds
-- adjust or repair the brake before operating the
mower. Contact your Walker dealer for this service
or refer to the Walker Service Manual.