Husqvarna 555 Workshop Manual page 36

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
7.14.3 To remove and install the carburetor
1. Remove the cylinder cover.
2. Remove the spark plug and the spark plug cap.
36 - Repair instructions
3. Turn the knob and remove the air filter from the air
filter holder.
H
J
4. Push the air filter holder and the carburetor slightly
forward to get access to the screws with the Torx
tool. Remove the 2 screws.
H
J
5. Lift the electrical wires from the air filter holder.
6. Disconnect the air filter holder from the rubber parts
on the sides.
H
J
1540 - 001 -