Service Manual

Workman HD Series Page 8 -- 7 Electrical System
Verify Interlock System Operation
The purpose of the interlock system is to prevent the en-
gine from cranking or starting unless the clutch pedal is
depressed (all models), the hydraulic lift lever is in the
neutral position (all models) and rear PTO (if equipped)
is disengaged.
CAUTION
Do not disconnect safety switches. They are for
the operator’sprotection. Check the operationof
the interlock switches daily for proper operation.
Replace any malfunctioning switches before op-
erating the machine.
To verify clutch interlock switch operation:
1. Sit on operator’s seat and engage parking brake.
Move shift lever to NEUTRAL position. Make sure that
hydraulic lift lever is in neutral position. Disengage rear
PTO ( if equipped).
2. Without depressing clutch pedal, rotate ignition key
to START position.
3. If enginecranks or starts, there isa malfunction inthe
interlock system that must be repaired before operating
vehicle.
To verify operation of hydraulic lift lever interlock
switch:
1. Sit on operator’s seat and engage parking brake.
Move shift lever to NEUTRAL position. Disengage rear
PTO ( if equipped).
2. Move hydraulic lift lever out of neutral position.
3. Depress clutch pedal and rotate ignition key to
START position.
4. If enginecranks or starts, there isa malfunction inthe
interlock system that must be repaired before operating
vehicle.
To verify rear PTO interlock switch (if e quipped) op -
eration:
1. Sit on operator’s seat and engage parking brake.
Move shift lever to NEUTRAL position. Make sure that
hydraulic lift lever is in neutral position.
2. Engage rear PTO.
3. Depress clutch pedal and rotate ignition key to
START position.
4. If enginecranks or starts, there isa malfunction inthe
interlock system that must be repaired before operating
vehicle.
Electrical
System