Husqvarna 324HDA, Руководство по ремонту

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15
3
Fuel system
531 03 06-23
502 50 83-01
Tank venting
Check that the tank venting valve works
correctly.
Replace the fuel cap if the valve is
faulty.
Tank venting
Tank venting takes place through the
fuel cap and needs to be functional for
the engine to work.
• Remove the fuel hose from the
carburettor and empty the fuel from
the tank.
• Connect the fuel hose to pressure
tester no. 531 03 06-23.
• Pump up a pressure and vacuum of
50 kPa (0.5 bar) in the tank.
• The pressure should revert to
atmospheric pressure within 45
seconds.
The fuel cap can be taken apart for
cleaning.
Remove the gasket (A).
Using a screwdriver press off the cover
(B) from the valve housing (C).
The non-return valve (D) can be pried
out of the valve housing with the help of
a small screwdriver. Push together the
valve with your fingers and check that
its sealing lips are not damaged.
Ensure that the two small holes in the
valve housing are open.
Fuel filter
The fuel filter can be removed through
the tank’s fill hole.
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.
Clean the filter externally if it is not too
dirty.
Replace the filter if required.
If the filter is relatively new and not too
heavily contaminated the outside can
be cleaned using 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 circlip is
sufficiently tight so that the filter cannot
slide off the tube.