Petrol Circuits; Vacuum Pump - PEUGEOT Vivacity 50 CC 2 Stroke Technical Training Manual

ENGINE

Petrol circuits.

1. Fuel tank.
2. Petrol filter.

Vacuum pump.

1
NC
8
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1
3
4
2
NC
3
2
3. Vacuum pump.
4. Carburettor.
Functioning.
Under the effect of pulses, the diaphragm (1)
pumps in and out the fuel by means of reed
valves (2) and (3).
Safety.
When the ball (4) lifts, fuel can flow into the
pump when the needle valve closes inside the
carburettor or when there is a boost pressure at
the fuel pump outlet.
4