Derbi GP1 50 cc, Руководство по ремонту, Страница: 72 / 138

71
F
UEL SUPPLY
The vehicle is fitted with a membrane pump controlled via
the vacuum generated in the intake duct. The tank is there-
fore fitted with a hole located at its lowest point, which allows
fuel to flow to the pump and then to the carburettor.
To check the pump performance, the following mass flow
measurement may be carried out:
1) Start the engine, warm it up to the standard operating
temperature, and shut it down.
2) Detach the fuel inlet tube on the carburettor and insert it
inside a scaled recipient.
3) Start the engine without twisting the throttle, and let it
run at idle.
4) Let the engine run for a total of 10 seconds, from start-up
and shut it down.
5) Check the quantity of fuel is not less than prescribed.
Characteristic
Fuel supplied
~100ccX10”
F
UEL SUPPLY