Walker MS (13 HP) - Manual (Page 60)

Maintenance Instructions
CHECKING/SERVICING
56
Drive Belts
Raise the body and inspect the condition of the three
(3) drive belts after every 25 hours of operation --
engine, PTO drive, and ground drive. If the belts
show signs of cracking or deteriorating, the belts
should be replaced. Refer to REPLACING/REPAIR-
ING the Drive Belts in this section.
Mower Deck Gearbox Oil Seals
The mower deck gearbox seals should be inspected
every 25 hours for evidence of oil leaking; particu-
larly the lower oil seal on the blade drive gear-
box. This seal is protected by the trash guard on the
blade hub and seal protector plate on the housing,
but is still vulnerable to seal damage due to operating
in an adverse environment. The mower blade must
be removed for inspection of the seal, so it is recom-
mended to inspect the gearbox seals when
blades are removed for sharpening. If an oil leak
is noted, the seal should be replaced and the gear-
box assembly relubricated. Refer to LUBRICATION
for Mower Deck Gearbox Lubrication in this
section.
Spark Plug
Every 100 hours, remove the spark plug, inspect,
clean, and reset the gap (or replace with a new
plug). Clean spark plug with a wire brush. If the
electrodes are burned short or pitted, replace the
plug (refer to
Specifications for the proper type of
replacement plug). Check the spark plug gap with a
wire-type feeler gauge and set the gap between
0.028 and 0.032 in. (0.7 and 0.8 mm). Reinstall and
tighten to 17 ft-lb (23 N
· m).
Breaker Points
The Kawasaki engine is equipped with electronic
ignition. No breaker points, maintenance, or adjust-
ments are necessary with this system. Contact an
authorized Kawasaki engine dealer in case of igni-
tion failure.
Fuel Lines and Clamps
Every year, inspect the fuel line from the tank 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.
Blade Brake Action
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 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.
WARNING
It is important to check and maintain blade
brake action for safe operation of the ma-
chine.