Air Fi Lter; Tank Venting - Husqvarna 122 HD60 Workshop Manual

3
In addition to the fuel tank and carburettor, the fuel system consists of the air fi lter, fuel fi lter and

tank venting.

All these components interact so that the engine receives the optimal mixture of fuel and air to
make it as effi cient as possible. Very small deviations in the carburettor setting or a blocked air
fi lter have a large effect on the running and effi ciency of the engine.
The carburettor can come from several different manufacturers on our models, but the function
and repair methods are essentially the same.
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Fuel system
Air fi lter
Loosen the wing screw and lift off the
cover above the air fi lter.
Remove the air fi lter and clean it with
lukewarm soapy water.
Replace damaged fi lters with a new one.
505 69 85-70
Impregnate the fi lter with air fi lter oil.
NOTE!
Make sure that the air fi lter is free of cleaning agent before it is impregnated
with air fi lter oil.
531 00 60-76
Tank venting
Check that the tank venting valve works
correctly.
531 03 06-23
Air fi lter
Loosen the wing screw and lift off the
cover above the air fi lter.
Remove the air fi lter.
The fi lter is made of foamed plastic and
must be cleaned with lukewarm soapy
water.
Replace damaged fi lters with a new one.
WARNING!
Do not clean not the fi lter
with petrol. Hazardous!
TIP!
Use Husqvarna's cleaning agent Active
Cleaning no. 505 69 85-70.
Impregnate the fi lter with air fi lter oil.
TIP!
Place the fi lter in a plastic bag and pour
about a tablespoon of air fi lter oil no.
531 00 60-76 into the bag.
Massage the oil into the air fi lter.
Tank venting
Tank venting takes place through the fuel
cap and needs to be functional for the
engine to work.
• Empty the fuel tank and turn the hedge
trimmer upside down.
• Remove the air fi lter cover.
• Remove the transparent fuel hose (A),
the return pipe, from the carburettor
and connect it to the pressure tester,
no. nr 531 03 06-23.
• Make sure the hose bushings in the
tank are leak tight.
• Pump up a negative pressure in the
tank. No or signifi cantly low negative
pressure must be noted.