CLUTCH
14
40
Dismantling
Dismantle the cutting head, the rear belt
guard, the air filter cover, and the filter
base.
Fit the piston stop
Lock the crankshaft's travel by fitting the
piston stop 504 91 06-05 instead of the
spark plug.
Dismantling
Dismantle the cutting head, the
rear belt guard, the air filter
cover, and the filter base.
Fit the piston stop
Lock the crankshaft's travel with
the piston stop 504 91 06-05.
Unscrew the clutch – clockwise
Note that the clutch has a left-hand thread,
thus screw clockwise to dismantle the
clutch. The clutch is marked with the
dismantling direction “Off”.
Unscrew the clutch –
clockwise
The clutch has a left-hand thread.
It is marked with the dismant-
ling direction “Off”.
Dismantle the clutch
Once the clutch has been dismantled the
clutch drum can be pulled from the axle.
Note the washer between the clutch
and the drum.
Dismantle the clutch
Dismantle the clutch drum.
Note the washer between the
clutch and the drum.
Reassembly
Note that the clutch should be turned
with the low spanner grip towards the
clutch drum.
The clutch should be tightened to a
torque of 27–32 lbf·ft/37–43 Nm.
Wear tolerances
Engagement speed – min. 3100 rpm
The clutch must be rectified if the blade starts to rotate at
an engine speed below 3100 rpm.
Clutch shoes
The height of the clutch shoe's bevelled section should
not be less than .04 in./1 mm. Replace if necessary for the
complete clutch. Never replace individual shoes from
another clutch – this creates imbalance.
Clutch drum
The inside diameter of the clutch drum must not exceed
3.14 in./79.8 mm. Replace if necessary with a new clutch
drum.
Check the clutch components
Take apart and clean the clutch if necessary. Check the
state of the springs.
504 91 06-05
Warning!
Never use impact on the puller – this will damage the piston. Even dis-
mantling without the piston stop using a striking tool results in a risk of
damage to the flywheel's locking mechanism (keyway/key).
27–32 lbf·ft/37–43 Nm
≥
.04 in.
≥
1.0 mm
≤
3.14 in.
≤
79.8 mm
