Fuel system | 3 |
Impregnate the filter with air filter oil.
531 00
Tank venting
Check that the tank venting valve works correctly.
Replace the fuel cap if the valve is faulty.
531 03
Fuel filter
The fuel filter can be removed through the tank’s fill hole.
502 50
Impregnate the filter with air filter oil.
Tip!
Place the filter in a plastic bag and pour about a tablespoon of air filter oil no. 531 00
Massage the oil into the air filter.
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
•Pump up a pressure and vacuum of 50 kPa (0.5 bar) in the tank.
•The pressure should sink to 20 kPa or return to normal pressure within 45 seconds.
The fuel cap can be taken apart for cleaning.
Use a screwdriver and prise off the housing (A) that contains a rubber diaphragm (B) and a filter (C).
Knock the housing against a tabletop so that the cover (D) over the dia- phragm falls off.
Blow the filter (C) clean, and the sintered filter (E), with compressed air and mount the fuel cap in the reverse order to how it was disassembled.
Make sure that the flat surface on the cover (D) is turned towards the dia- phragm.
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
NOTE!
The fuel filter can snag under the shaft bushing in the tank. With the aid of a long screwdriver, loosen the filter. Do not pull on the hose, since it can easily be pulled from the filter.
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