Replacing The Fuel Filter; Fuel Pump - Husqvarna 525BX Workshop Manual

Repair instructions

7.10 Replacing the fuel filter

The fuel hose in the tank contains a fuel filter. It is
accessible through the fill hole. Pull out the filter
with your fingers or with help of tool 502 50 83-01.
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 clip is sufficiently tight so that the filter
cannot slide off the tube.

7.11 Fuel pump

The fuel pump has the task of facilitating 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.
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