Husqvarna 576 XP/G AT - Page 32

32 – English
CARBURETTOR
Function
The carburettor operates differently in the following modes:
• Cold start mode
• Idling mode
• Part throttle mode
• Full throttle mode
In the cold start mode (g. 4) the choke valve (H) is fully closed. This increases the vacuum in the carburettor so that
fuel is sucked more easily from all the diffuser jets (D, E and F). The throttle valve (I) is partly open. Extra air inlet (J) is
closed.
In the idling mode (g. 5) the throttle valve (I and J) is closed.
Air is sucked in through an aperture in the throttle valve and a small amount of fuel is supplied through the diffuser jet (D).
In the part throttle mode (g. 6) the throttle valve (I) is partially open. Fuel is supplied through the diffuser jets (D and E).
In full throttle mode (g. 7) all valves are open and fuel is supplied through all diffuser jets (D, E, F and G). Extra air inlet
(J) is also fully opened.
Fig. 4
Fig. 6
Fig. 5
Fig. 7
I
J
A
F
E
I
H
J
D
G
D
F
E
E
I
J
D
J