Subaru Robin Power Products R600 manual 1Float system

12-5 CABURETOR

12-5-1 FUNCTION and COMPONENTS (See Fig. 12-28)

1)Float system

The float chamber is located direct& under the carburetor. Flat and needle valves. maintain a constant id level inside the float chamber.

The fuel in the tank tlo\vs into the float chamber from the needle valve. When a certain quantity of fuel enters the chamber. the float rises. When the buoyax)- oi the flat \-alve balances with the fuel in-flow pressure of the needle valves. the valves close to keep the fuel at the correct level.

Schematic diagram of the fuel system

CHOKE -	BY PASS;	THROTTLE	,-PILOT	OUTLET
		r VALVE

PILOT AIR JET

L-d

PILOT JETJ’

FLOAT

.“.- MAIN NEEDLE

MAIN AIR JET? /.-NEEDLE VALVE

FLOAT i ‘MAIN JET

Fig. 72-28

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