Checking The Fuel Pump - Yamaha YP250 5GM2-AE1 2000 Service Manual

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FUEL PUMP SYSTEM
EB808410

CHECKING THE FUEL PUMP

WARNING
Gasoline is extremely flammable and under
certain circumstances there can be a danger
of an explosion or fire. Be extremely careful
and note the following points:
S Stop the engine before refuelling.
S Do not smoke and keep away from open
flames, sparks or any other source of fire.
S If you do accidentally spill gasoline, wipe it
up immediately with dry rags.
S If gasoline touches the engine when it is
hot, a fire may occur. Therefore, make sure
that the engine is completely cool before
performing the following test.
1. Check:
S Fuel pump operation
a. Fill the fuel tank.
b. Put the end of the fuel hose into an open con-
tainer.
c. Turn the fuel cock to "ON" or "RES".
d. Connect the battery (12 V) to the fuel pump
coupler as shown.
Battery positive lead ! black/blue 1
Battery negative lead ! black 2
e. If fuel flows out of the fuel hose, the fuel pump
is OK. If fuel does not flow, replace the fuel
pump.
93
ELEC

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