3

Fuel system

18

Clean the filter externally if it is not too

If the filter is not too dirty, its surface

dirty.

can be cleaned with a brush.

Replace the filter if required.

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

Fuel pump

The fuel pump facilitates cold starts.

The fuel pump has the task of facilitat-

The pump cannot be repaired and must

ing the start of the engine when cold.

The pump fills the carburettor with fuel

be replaced if it stops working.

before attempting to start the engine.

Note how the fuel hoses are connected

This also prevents vapour bubbles from

to simplify assembly.

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

Carburettor

Dismantling

Dismantling

Blow clean the carburettor compartment.

1.Remove the carburettor cover and

Loosen the bolts (A) and remove the

blow the carburettor compartment

clean with compressed air.

nuts (B).

 

 

Remove the fuel hose (C) and fold the

2.Loosen the bolts (A).

 

 

filter holder aside.

3.Remove the nuts (B).

 

 

 

 

 

4.Remove the fuel hose (C) from the

 

 

 

 

 

 

carburettor and the filter holder.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

505 38 13-08

 

502 50 18-01

 

 

Move the fuel tank so far forward that

5.

Move the fuel tank so far forward

the fuel hoses (C) and (D) can be

 

that the fuel hose (C) becomes

removed.

 

 

 

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.

 

 

 

 

 

 

Page 19
Image 19
Husqvarna 343R, 345RX, 343F, 345FX, 345FXT manual Fuel pump, Carburettor, Dismantling

343R, 345RX, 343F, 345FX, 345FXT specifications

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