Husqvarna 545 Mark II Workshop Manual page 41

In idling mode, the throttle valves (I) and (J) are closed
and the choke valve (H) is open.
Air is sucked in through an aperture in the throttle valve
and a small amount of fuel is supplied through the
diffuser jet (D).
D
I
In part throttle mode, the throttle valve (I) is partly open
and the choke valve (H) is fully open. Fuel is supplied
through the diffuser jets (D) and (E). The air throttle
valve (J) starts to open.
E
D
I
In the full throttle mode both valves are open and fuel is
supplied through all four diffuser jets (D, E, F and G).
The air throttle valve (J) is fully open.
F
E
D
I
8.14.3 To get access to the carburetor
1. Remove the cylinder cover.
2. Remove the spark plug and the spark plug cap.
722 - 003 - 26.03.2019
3. Turn the knob and remove the air filter from the air
filter holder.
H
J
4. Remove the insulation wall.
H
J
H
J
Repair instructions - 41