KUHN HR303D, Operator'S Manual

Page: 34 / 96

Power harrows
32
HR303D/M
Putting into service
Attach PTO shaft guard chain in hole (1) on machine
side.
Cam type cut-out clutch
The PTO shaft is factory fitted with a cam type cut-out
clutch. Check that cut-out clutch disengages during the
first periods of use:
- If the cam type cut-out clutch disengages too
frequently, the adjustment is too light. (See section:
Cam type cut-out clutch adjustment).
- If the cam type cut-out clutch does not disengage,the
adjustment is too heavy. (See section: Cam type cut-
out clutch adjustment).
The cam type cut-out clutch is based on the principle of
disengaging cams that release when an overload
occurs. When the cut-out clutch releases, it cuts-out
torque transmission to the machine.
When the cam type cut-out clutch releases:
- Disengage tractor PTO.
- Lift the machine off the ground.
- Engage the tractor PTO.
The cam type cut-out clutch re-engages
automatically.
To avoid serious accidents, the PTO drive
shaft guards must be properly in place and
fixed with the chains provided.
Immediately replace any worn or damaged
guard.