Husqvarna T525 Workshop Manual page 33

Repair instructions
Function
The carburettor functions differently in the following
modes:
Cold start mode
In cold start mode the choke valve (D) is comple-
tely shut. This increases the vacuum in the carbu-
rettor and fuel is easier to suck from all the diffuser
jets (E, F and G). Throttle valve (H) is partly open.
See Figure 36.
Idle mode
In idle mode throttle valve (H) is shut. Air is sucked
in through an aperture in the throttle valve and a
small amount of fuel is supplied through the dif-
fuser jet (F). See Figure 37.
Part throttle mode
In part throttle mode the throttle valve (H) is partly
open. Fuel is supplied through the diffuser jets (F
and G). See Figure 38.
Full throttle mode
In full throttle mode both valves are open and fuel
is supplied through all three diffuser jets (E, F and
G). See Figure 39.
Fig 36
Fig 37
Fig 38
Fig 39
33
English –