Operating Instructions
38
CAUTION
An operator presence switch (seat switch)
will cause the engine to stop if the blade
clutch is engaged and the operator is not in
the seat. The function of this switch should
be checked by the op erator raising o the
seat and engaging the blade clutch; the en-
gine should stop. If the switch is not work-
ing, it should be repaired or replaced be-
fore operating the mower. DO NOT
disconnect the safety switches; they are
for the operator’s protection.
IMPORTANT: DO NOT engage the blade clutch
when transporting the mower across drives, side-
walks, loose materials, etc. DO NOT engage the
blade clutch with the PTO shaft disconnected
(the mower deck removed from tractor).
CAUTION
If the cutting blades strike a stationary ob-
ject while mowing, stop the mower imme-
diately, disconnect the spark plug wires, lift
the deck, and inspect the deck and blades
thoroughly for damage. Make sure that the
blade timing has not been dis turbed (the
blades should be at 90 degrees to each
other). Refer to REPLACING/RE PAIRING
the Blade Overload Shear Bolts in Mainte-
nance Instructions if blades are out of time.
Also, make sure the blade retain ing nuts
are torqued to 60 lb·ft (81 N·m).
STOPPING THE MACHINE
1. Pull the steering levers to the NEUTRAL posi-
tion and then move the FSC lever backward to
the NEUTRAL-PARK position.
2. Slow the engine to a fast idle; put the throttle in
the 1/2 throttle position.
3. Disengage the blade clutch.
IMPORTANT: DO NOT disengage the blade
clutch with high engine speed (above 1/2 throt-
tle) since the brake action on the blade drive will
cause premature wear of the brake band.
WARNING
A brake stops the cutter blades and GHS
blower from freewheeling within ve (5)
seconds after disengaging the clutch. If
the brake sys tem malfunctions and the
blades do not stop within ve (5) seconds,
the brake should be adjusted or repaired
before further operation of the mower.
Contact your Walker dealer, or refer to
ADJUSTMENTS of Clutch Disengagement/
Brake Action in Maintenance Instructions.
4. Slow the engine to idle, put throttle in IDLE posi-
tion; turn the ignition switch OFF.
WARNING
Remove the key from the ignition switch
when leaving the mower unattended. This
will prevent children and inexperienced
operators from starting the engine.
5. Engage the parking brake.
IMPORTANT: The hydrostatic transmissions
lock to prevent the mower from rolling freely
with the engine stopped. However, if the mow-
er is parked on a slope, it is necessary to EN-
GAGE the parking BRAKE to prevent the
mower from creeping. This is due to a small
amount of slip page in the hydrostatic transmis-
sions, especially when transmission uid is
warm. Also, engaging the parking brake is rec-
ommended when stopping or parking the ma-
chine in a conned space with little tolerance
for movement.
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