Fuel Pump; Carburettor - Husqvarna 343R, 345RX, 343F, 345FX, 345FXT Workshop Manual

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Fuel system
Clean the filter externally if it is not too
dirty.
Replace the filter if required.

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.
Loosen the bolts (A) and remove the
nuts (B).
Remove the fuel hose (C) and fold the
filter holder aside.
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Move the fuel tank so far forward that
the fuel hoses (C) and (D) can be
removed.
If the filter 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 filter's connection
neck is inserted as far as possible into
the fuel hose and that the O-ring is
sufficiently tight so that the filter cannot
slide off the tube.
Fuel pump
The fuel pump has the task of facilitat-
ing the start of the engine when cold.
The pump fills 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. Loosen the bolts (A).
3. Remove the nuts (B).
4. Remove the fuel hose (C) from the
carburettor and the filter holder.
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5. Move the fuel tank so far forward
that the fuel hose (C) becomes
accessible.
Move the O-ring back and remove
the hose from the nipple.
Also remove the fuel hose (D) from
the nipple on the tank.