Husqvarna R135 Workshop Manual page 37

4
The centrifugal clutch has the task of transferring the power from the engine to the cutting equipment's
drive axle. As the name implies, it works according to a centrifugal principle.
This means the clutch's friction shoes are thrown outwards towards the clutch drum at a certain engine
speed. When the friction against the drum is suffi ciently great it drives the drive shaft at the same speed as
the engine.
Some slipping occurs between the clutch and the clutch drum when accelerating as well as in the reversed
situation when the cutting equipment jams. Thereby preventing abnormal load changes on the crankshaft.
The engagement speed has been carefully tested so that the engine can idle without the cutting
equipment's drive shaft rotating.
333/335
E
E
36
Centrifugal clutch
Centrifugal clutch
Dismantling opt. A
Remove the cover over the air fi lter,
cylinder cover and the cover over the
muffl er.
Loosen the screw and slide the cable
holder (B) forwards.
Remove the screws and slide the cover
(D) forwards.
Dismantle the protective cover under the
engine.
Remove the 3 screws (E) and swing the
engine body to one side.
336
E
Centrifugal clutch
Dismantling opt. A
Remove the cover over the air fi lter,
cylinder cover and the cover over the
muffl er.
Loosen the screw (A) and slide the ca-
ble holder (B) forwards on the shaft.
Remove the screws (C) and slide the
cover (D) forwards on the shaft.
Dismantle the protective cover under
the engine.
Remove the 3 screws (E) and swing the
engine body to one side so the centrifu-
gal clutch becomes accessible.
Dismantling opt. B
Remove the protective plate under the
engine body (3 or 4 screws).
Lift out the ignition lead and short-circuit
cables from their guides.
Remove the 3 screws (E) and swing the
engine body to one side so the clutch
becomes accessible.