Maintenance Instructions
H37i
Checking and Servicing
62
Fuel Lines and Clamps
NOTE:
The engine fuel injection system is pres-
surized and should only be serviced by a Walker
dealer or authorized Briggs & Stratton service
dealer.
Every year,
inspect the fuel supply lines from the
tank(s) 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.
Engine Starter
Yearly or every 500 hours
disassemble and clean
the solenoid shift starter. Refer to the Briggs &
Stratton Service Manual for this procedure or con-
tact an authorized Briggs & Stratton 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
control 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
reverse, refer to
Adjustments for Transmission
Control Step 3 - Neutral Function Adjustment on
page 71.
Straight Ground Tracking
Check for straight ground track by driving on a
smooth, level surface with hands off the steering
levers. 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 refer-
ence). If the machine is drifting to the right or left,
refer to
Adjustments for Transmission Control Step
5 - Straight Tracking Adjustment on page 72.
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
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 as a
visual indi cation 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.
Refer to
Adjustments for Clutch Disengagement/
Brake Action
Step 2 - Blade Brake Band Adjust-
ment on page 76
.
PTO U-Joints
The PTO U-joints should be inspected
yearly
for
looseness and wear. If either is noticed, the
respective shaft or tube should be replaced. A
worn U-joint can cause vibration and extensive
damage to the PTO and the whole machine.
