Check if there is fuel in the tank.
Disconnect the fuel hose between the fuel pump and the carburetor on the carburetor side and direct it into a suitable container. Turn on the starter briefly, and fuel should flow out of the hose in a pulsating stream.
Warning: Fire hazard, no open flame!
If fuel is supplied:
- Check if there is fuel in the float chamber by removing the air filter and operating the accelerator pump. Fuel should come out of the injection tube or injection nozzle.
- If fuel does not come out, the accelerator pump/injection tube is defective or clogged.
- If the float chamber is empty, check the float chamber needle valve for patency.
- Check the fuel pump feed pressure. Specified value: 0.35-0.40 bar at a crankshaft speed of 4000 1/min. The fuel return line must be disconnected.
- Check if the fuel filter is clogged (in winter, ice blockage is possible).
If fuel is not supplied:
- Disconnect the fuel line supplying fuel to the pump.
- If fuel is leaking from the fuel line, check the pump for leaks, remove it if possible and examine it.
- If fuel does not leak, disconnect the fuel line from the fuel tank and blow it out.
- Check the operation of the fuel tank ventilation, clean the system if necessary. Possible defect, clogging of the fuel tank filler pipe valve.
- Remove and clean the fuel tank.
Visitor comments