71
Maintenance Instructions
CHECKING/SERVICING
Fuel Lines and Clamps
Every year,
inspect the fuel supply line from the
tank to engine for deterioration or damage. Also,
inspect the fuel line
clamps for tightness.
Good
preventive maintenance calls for complete
replace-
ment
of fuel lines and clamps
every two (2) years.
Engine Starter
Yearly or every 500 hours
disassemble and clean
the solenoid shift starter. Refer to the Kohler Service
Manual for this procedure or contact an authorized
Kohler engine dealer to perform this service.
Transmission Control Setting
On a
yearly
interval or when an out-of-adjustment
condition is observed, check the transmission con-
trol for proper function as follows:
Neutral-Park
With the mower parked on level ground, start and
run the engine, first at idle and then normal operat-
ing speeds. With the FSC in the
NEUTRAL-PARK
position, there should be no movement of either
drive tire. If the tire(s) are “creeping” forward or re-
verse, refer to
ADJUSTMENTS
for the
Neutral
Function Adjustment - Step 3
in this section.
Straight Ground Tracking
Check for straight ground track by driving on a
smooth, level surface with hands off the steering le-
vers. Set the FSC at different speeds and observe
if the mower moves in a straight line (use a cement
joint or other line on the ground for reference). If the
machine is drifting to the right or left, refer to
ADJUSTMENTS
for
Straight Ground Travel Adjust-
ment - Step 4
in this section.
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 (and
blower brake on GHS models) by engaging the blade
clutch (PTO), operating the engine at full throttle,
then disengaging the clutch and measuring how
quickly the blades stop. Watch the rotation of the
blade drive shaft and blower pulley as a visual indica-
tion that movement has stopped. If the brake is
working properly, all rotation will stop five (5)
seconds after 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
ADJUSTMENTS
for
Clutch
Disengagement/Brake Action,
Step 3 -
Blade Brake
Band Adjustment
on page 87
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.
