-34-
Fuse (5A
・
20A
・
50A)
The mower unit will not rises
or lowers
Is the fuse normal?
Are respective connections
of wiring normal?
Is the mowing height
adjustment switch normal?
Replacement of fuse.
Refer to the wiring diagram.
Reconnection.
Replacement of switch.
Failure of solenoid valve
Failure of hydraulic cylinder
Failure of flow dividing valve
YES
NO
YES
YES
NO
NO
The mower unit rises
but it does not lower.
Are respective connections
of wiring normal?
Is the mowing height
adjustment switch normal?
Is the throttle valve normal?
Reconnection.
Refer to the wiring diagram.
Replacement of switch.
Adjustment of throttle valve.
Failure of solenoid valve
(Failure of check valve)
Failure of hydraulic cylinder
YES
NO
YES
YES
NO
NO
23-3. Mower unit trouble