Maintenance Instructions
CHECKING/SERVICING/
REPLACING/REPAIRING
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| Fuel | |
Fuel Control Arm In | |||
| Valve | ||
Open (Run) Position |
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Throttle Control Arm (Noted For Reference)
Fuel Valve Open
(Engine START and RUN Position)
If the fuel valve solenoid is not operating properly, the problem may be isolated by first checking the operation of the solenoid as follows:
1.Disconnect the fuel valve solenoid wire plug from the wire harness.
2.Make jumper wire connections from the sole- noid to the battery:
a.Red wire to positive terminal (+), black wire to ground
b.Touch white wire to the positive terminal (+) and the solenoid should pull closed (open the fuel valve).
c.Remove the white wire and the solenoid should hold the fuel valve open.
d.Remove the red wire and the solenoid should open (close the fuel valve).
Replace the solenoid if it does not operate properly by the above test. If it does operate, the problem is in the electrical system and can be checked using the wiring diagram. Refer to ELECTRICAL SYSTEM for Wiring Diagram in this section.
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. Refer to ADJUSTMENTS of Blade Clutch (PTO) in this section.
REPLACING/REPAIRING
DANGER
To prevent accidental starting of the engine when replacing parts or repairing the machine, remove the key from the ignition switch and disconnect the electrical plug on the fuel
IMPORTANT: ALWAYS use genuine factory replacement parts. Substitute parts CAN result in product malfunction and possible injury to the operator and/or others.
Drive Belts
There are five (5) individual belts on GHS models or four (4) belts on SD models:
•Engine PTO Drive Belt (3 Groove Power Band)
•Jackshaft Drive Belt
•GHS Blower Drive Belt (GHS Model Only)
•Hydrostatic Ground Drive Belt
•Engine Fan Belt
The belts may be removed and replaced using the procedures described on the following pages.
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