Fuel Pump; Carburettor; Fuel System - Husqvarna 326 E Workshop Manual

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Model 326
Model 327

Fuel pump

The fuel pump facilitates cold starts.
The pump cannot be repaired and must
be replaced if it stops working.
Note how the fuel hoses are connected to
simplify assembly.

Carburettor

Dismantling
Blow clean the carburettor compartment
and disconnect the throttle cable from the
carburettor.
Remove the screws and fuel pipes and lift
off the carburettor.
The carburettor is made by Zama.
Design, function and servicing correspond
with the Walbro carburettor.
Default carburettor settings:
H = 2 1/4 revolution open
L = 1 1/2 revolution open
The carburettor needles are fi tted with
movement limiters (caps).

Fuel system

If the fi lter is not too dirty, its surface can
be cleaned with a brush.
Otherwise it must be replaced.
Check the fuel hose for cracks and leaks.
Make sure that the fi lter's connection neck
is inserted as far as possible into the fuel
hose and that the O-ring is suffi ciently
tight so that the fi lter cannot slide off the
tube.
Fuel pump
The fuel pump has the task of facilitating
the start of the engine when cold. The
pump fi lls the carburettor with fuel before
attempting to start the engine. This also
prevents vapour bubbles from blocking the
narrow fuel channels.
If the pump does not work it must be
replaced.
Note how the fuel hoses are connected to
simplify assembly.
Carburettor
Dismantling
1. Remove the carburettor cover and
blow the carburettor compartment
clean with compressed air.
2. Disconnect the throttle cable from the
lever arm on the carburettor and from
the guide in the air fi lter connection.
3. Remove carburettor screws and the
fuel pipe.
4. Move the air fi lter connection to the
side, remove the fuel pipe and lift off
the carburettor.
The carburettor is made by Zama.
It has the same design and function as the
Walbro carburettor, which means that ser-
vicing is also carried out in the same way.
The lever arm should lie fl ush with the
carburettor housing's contact face.
Default carburettor settings:
H = 2 1/4 revolution open
L = 1 1/2 revolution open
The carburettor needles are fi tted with
movement limiters (caps).