Fuel system. When turning the starter motor, negative pressure is generated in the combustion chamber

When turning the starter motor, negative pressure is generated in the combustion chamber. This negative pressure works on the diaphragm of fuel cock through passage way provided in the carburetor main bore and vacuum hose, and diaphragm builds up a negative pressure which is higher than the spring pressure. Fuel valve in the fuel cock is forced to open due to diaphragm operation, and thus allows fuel to flow into the carburetor float chamber.

Fuel tank

Carburetor

FUEL TANK REMOVAL

• R emove the seat and air cleaner side cover. (See page 1-12.)

• R emove the fuel tank mounting bolts.

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• R emove the fuel tank.

WARNING:

Gasoline is very explosive. Extreme care must be taken.

• R emove the fuel cock by removing the bolts.

WARNING:

Gasoline is very explosive. Extreme care must be taken. Gaskets must be replaced with new ones to prevent fuel leakage.

If the fuel strainer is dirty with sediment or rust; fuel will not flow smoothly and loss in engine power may result. Clean the fuel strainer with compressed air.