Drive Belts; Spark Plugs; Ignition Wires; Fuel Lines And Clamps - Walker H27i Operator's Manual

Maintenance Instructions
4. If the blade cutting edge is dull or nicked, it
should be sharpened.
sharpening by grasping the end of the blade us­
ing a rag or a thick, padded glove, while loos­
ening and removing the bolt and washer that
mounts the blade.
5. Grind cutting edge at the same bevel as the
original. Sharpen only the top of the cutting
edge to maintain sharpness.
NOTE: Blades can be sharpened with an elec­
tric blade sharpener, conventional electric grind­
er, or a hand file.
ALWAYS wear eye protection and gloves
when sharpening a blade.
Sharpen at Original
30° Angle
30°
Do Not Grind or
Sharpen on Underside
Mower Blade Profile for Sharpening
6. Check blade balance by positioning the blade
horizontally on a blade balancer or use a nail
or shaft through the center hole. If either end of
the blade rotates downward, grind (remove)
metal on that end until the blade will balance.
The blade is properly balanced when neither
end drops. Balance of a blade is generally
main tained by removing an equal amount of
material from each end of the blade when
sharpening.
Blade Balancer
Blade Balanced on Magnetic
Wall-Mounted Balancer
60
Remove blades for
CAUTION
Intersection
Wear Area
Wing Tip
7. Mount the blade with wing tips pointing up into
the housing. For gear driven decks reinstall
the blade, washer, lock washer, and nut. Tight-
en the nut to 60 lb·ft (81 N·m). For belt driven
decks reinstall the spacer (if applicable), blade,
washer, and bolt. Tighten the bolt to 70 lb·ft
(95 N·m).

Drive Belts

Raise the body and inspect the condition of the four
(4) drive belts after every 25 hours of operation ­­
engine/PTO drive (3) and ground drive (1). Also re­
move the belt cover on the mower deck and check
the blade drive belt. If the belts show signs of
cracking or deteriorating, the belts should be re-
placed. Refer to REPLACING/REPAIR ING the
Drive Belts in this section.

Spark Plugs

Every 200 hours, remove the spark plugs, 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 wire­type feeler gauge and set the gap to 0.030 in.
(0.76 mm). Reinstall and tighten to 20 lb
Both spark plugs should be replaced yearly.

Ignition Wires

Good preventive maintenance calls for complete re-
placement of spark plug wires every two (2) years.

Fuel Lines and Clamps

NOTE: After the fuel injection pump module, the
fuel system is pressurized and should only be ser­
viced by a Walker dealer or authorized Kohler ser­
vice dealer.
Every year, inspect the fuel lines from the tanks to
engine for deterioration or damage. Also, inspect
the fuel line clamps for tightness. Good preven­
tive maintenance calls for complete replacement of
fuel lines and clamps every two (2) years.

PTO U-Joints

The PTO U­joints should be inspected yearly for
looseness and wear. If either is noticed, the respec­
tive shaft or tube should be replaced. A worn U­joint
can cause vibration and extensive damage to the
PTO and the whole machine.
CHECKING/SERVICING
· ·
ft (27 N m).