61
Maintenance Instructions CHECKING/SERVICING
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.
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 ve (5)
seconds after disengagement of the clutch. If the
brake system malfunctions blades do not stop in
ve (5) seconds adjust or repair the brake before
operating the mower. Refer to ADJUSTMENTS for
Clutch Disengagement/Brake Action, Step 2 - Blade
Brake Band Adjustment, on page 76.
Safety Switch System
WARNING
It is important to check and maintain the
safety switch system for safe operation of
the machine.
There are three (3) safety interlock switches on the
tractor; Seat Switch, FSC NeutralPark Switch, and
PTO Switch.
NOTE: There is a 1/2 second time delay function on
the seat switch to avoid engine power interruption
when driving over bumps.
If any of the following conditions occur during start
ing or operating, a safety interlock switch may be
malfunctioning. Contact your Walker dealer for trou
bleshooting and/or replacement.
● With or without an operator in the seat, the en
gine starts with the Forward Speed Control (FSC)
and/or the PTO engaged.
● With an operator in the seat, the engine starts
but dies soon after the Forward Speed Control
(FSC) or PTO is engaged.
● Without an operator on the seat, the engine
continues to run with the Forward Speed Control
(FSC) and/or PTO engaged.
● With an operator in the seat, the Forward Speed
Control (FSC) and PTO disengaged and warning
horn sounding, but the starter will not engage.
Forward Speed Control Friction Lock
The FSC friction lock is designed to hold the se-
lected forward travel speed when the steering le
vers are moved and yet the friction is not too heavy
to make moving the FSC control difcult (too much
friction). The procedure for checking the FSC fric
tion lock is as follows:
1. With the engine off, place the FSC in the full
FORWARD position and pull both steering le
vers back; the FSC lever should not move. If
the FSC lever moves back when the steering
levers are pulled back, the friction needs to be
increased.
2. With the steering levers held back, move the
FSC lever back from the FORWARD position.
With a proper amount of friction adjusted, the
FSC lever should move back with a slight
amount of resistance (friction). If the FSC lever
movement is “stiff”, the friction needs to be
decreased.
If the FSC friction lock needs to be adjusted, refer to
ADJUSTMENTS for Step 7 - Forward Speed Con-
trol Friction Adjustment in this section.
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