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Centrifugal clutch
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 out-
wards towards the clutch drum at a certain engine speed.
When the friction against the drum is sufficiently 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 equip-
ment’s drive shaft rotating.
Dismantling
Dismantle the cable protector, loosen
bolts (A) and (B).
Dismantling
The clutch is located between the fuel
tank and the engine.
In order to be accessible, the tank and
handle holder must be moved forward
on the shaft.
1. Dismantle the cable protector.
2. Loosen bolts (A) and (B).
Move the fuel tank so far forward that
the fuel hoses (C) and (D) can be
removed.
3. Move the fuel tank so far forward
that the fuel hose (C) becomes
accessible.
Move the O-ring back and remove
the hose from the nipple.
Also remove the fuel hose (D) from
the nipple on the tank.
Remove the 4 bolts holding the clutch
cover.
Dismantle the vibration dampers for
better access.
Move the fuel tank further forward and
remove the 4 bolts holding the clutch
cover to the engine.
Remove the vibration dampers from
their plugs in order to facilitate disman-
tling.