Toro 652D Operator's Manual page 74

1.74
TROUBLE SHOOTING
PROBLEM
Cutterheads fail to start
up when lowered into work.
Cylinders rotate in
wrong direction.
TROUBLE SHOOTING
Continued.
POSSIBLE CAUSE
Faulty seat sensor switch.
Low oil level.
Diverter valve jammed.
Sheared drive shaft.
Pressure relief valve
jammed open or wrongly
set.
Cutting cylinder jammed.
Cutting cylinder tight on
bottom blade.
Cutterhead control valve
in the 'off' position caused
by:
- Defective control
valve.
- Electrical fault.
Hoses wrongly connected.
Cutterhead drive switch
wrongly connected.
1.74
REMEDY
Check mechanical and
electrical operation
of switch.
Fill hydraulic oil
reservoir to correct
level.
Free off and lubricate or
replace the diverter
valve as necessary.
Check motor and
cylinder drive shafts
and replace if
necessary.
Have relief valve
cleaned and pressure
checked. Consult your Toro
dealer.
Free off as necessary.
Readjust setting.
Overhaul control
valve.
Have electrical
system checked.
Check hydraulic
circuit and reconnect
as necessary.
Check switch
electrical
connections.