Dismantling - Husqvarna 545RX Workshop Manual

4
The centrifugal clutch has the task of transferring the power from the engine to the cutting equip-
ment'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 fuel hoses.
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. Remove the cable protector (A).
2. Loosen the screws (B).
3. Loosen the handle with the wing nut
(C).
4. Slide the fuel tank and handlebar
mount forward on the shaft.
1. Remove the cable protector (A).
2. Loosen the screw (B).
3. Loosen the handle with the wing nut
(C).
4. Slide the fuel tank and handlebar
mount forward on the shaft.
502 50 64-01
5. Remove the fuel hoses from the tank
(A) and from the carburettor (B).