Filter
Top Products
76
Maintenance Instructions CHECKING/SERVICING
Radiator Hoses and Clamps - MTL and MTLEFI
Inspect the radiator hoses every 200 hours for de-
terioration or damage. Also check the tightness of
the hose clamps. Good preventive maintenance
calls for complete replacement of the radiator hos-
es 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 indication that
movement has stopped. If the brake is working
properly, all rotation will stop five (5) seconds af-
ter disengagement of the clutch. If the brake sys-
tem malfunctions - blades do not stop in five (5)
seconds - adjust or repair the brake before operating
the mower. Contact your Walker dealer for this ser-
vice or refer to the Walker Service Manual.
PTO U-Joints
The PTO U-joints should be inspected yearly for
looseness and wear. If either is noticed, the respec-
tive shaft or tube should be replaced. A worn U-joint
can cause vibration and extensive damage to the
PTO and deck gearboxes.
Safety Switch System
There are three (3) safety interlock switches on the
tractor; Seat Switch, FSC Neutral - Park Switch, and
PTO Switch.
NOTE: There is a 1 to 1-1/2 second time delay
function on the seat switch to avoid engine power in-
terruption 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 an operator in the seat, the engine 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
starts and 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 panel horn
works, but the starter is not engaging.
Forward Speed Control Friction Lock
The FSC friction lock is designed to hold the select-
ed forward travel speed when the steering levers
are moved and yet the friction is not too heavy to
make moving the FSC control difficult (too much
friction). The procedure for checking the FSC fric-
tion lock is as follows:
1. Place the FSC in the full FORWARD position
and pull both steering levers back; the FSC le-
ver 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 de-
creased.
If the FSC friction lock needs to be adjusted, contact
your Walker dealer or refer to the Walker Service
Manual.
WARNING
It is important to check and maintain blade
brake action for safe operation of the ma-
chine.
WARNING
It is important to check and maintain the
safety switch system for safe operation of
the machine.