Maintenance Instructions

CHECKING/SERVICING

Radiator Hoses and Clamps - MTL and MTLEFI

Inspect the radiator hoses every 200 hours for deterioration or damage. Also check the tightness of the hose clamps. Good preventive maintenance calls for complete replacement of the radiator hoses and clamps every two (2) years.

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 (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 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. Contact your Walker dealer for this service 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 respective 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

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 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 interruption when driving over bumps.

If any of the following conditions occur during starting or operating, a safety interlock switch may be malfunctioning. Contact your Walker dealer for troubleshooting 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 selected 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 friction 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.

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