Dismantling - Husqvarna 555FX Workshop Manual

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.
32
Centrifugal clutch

Dismantling

Loosen the fuel hoses from the
carburettor and the fuel pump.
502 50 18-01
Slide the fuel tank and handlebar mount
forward on the shaft.
502 50 18-01
Remove the 4 screws holding the clutch
cover and lift the engine body to the
side.
502 21 58-01
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 cylinder cover and
guard over the muffl er.
2. Remove the cover over the fuel
pump.
3. Loosen the fuel hoses.
4. Remove the cable protector (A).
5. Loosen the screw (B).
6. Loosen the handle with the wing nut
(C).
7. Slide the fuel tank and handlebar
mount forward on the shaft.
502 50 64-01
Remove the 4 screws holding the clutch
cover on the engine.
Lift the engine body to the side so that
the clutch becomes accessible.