WN Engine Fuel Pump

The fuel pump is fastened with two nuts through a heat-insulating spacer and an o-ring. Pump housing and cover are one-piece, i.e. The design of the fuel pump is non-separable and cannot be repaired.

Checking the fuel supply pressure of the fuel pump

Connect the control gauge hoses to the fuel pump and to the carburetor.

Start the engine and measure the fuel supply pressure on the pressure gauge: it should be in the range of 0.20-0.25 kg / cm².

The pressure at the outlet of the fuel pump is not adjustable. If the pressure drops below the permissible level, replace the fuel pump.