Fuel Pump Inspection; Fuel Discharge Amount Inspection - Suzuki TU250X Service Manual

FUEL PUMP INSPECTION

Turn the ignition switch ON and check that the fuel pump oper-
ates for few seconds.
If the fuel pump motor does not make operating sound, inspect
the fuel pump circuit connections and TO sensor.
If the TO sensor and fuel pump circuit connections are OK, the
fuel pump may be faulty, replace the fuel pump with a new one.

FUEL DISCHARGE AMOUNT INSPECTION


Gasoline is highly flammable and explosive.
Keep heat, spark and flame away.
• Lift up the fuel tank by removing the fuel tank mounting bolt.
(5-3)
• Disconnect the fuel feed hose 1 from the fuel delivery pipe.
• Disconnect the fuel pump lead wire coupler 2.
• Place the measuring cylinder and insert the fuel feed hose
end into it.
• Connect proper lead wires to the fuel pump lead wire coupler
(fuel pump side) and apply 12 V to the fuel pump (between R
wire and B wire) for 10 seconds and measure the amount of
fuel discharged.
Battery + terminal
Battery - terminal
If the pump does not discharge the amount specified, it means
that the fuel pump is defective or that the fuel mesh filter is
clogged.
 Fuel discharge amount:
NOTE:
The battery must be in fully charged condition.
R terminal
B terminal
33.3 ml (1.13 US oz) and more/10 sec.
FUEL SYSTEM AND THROTTLE BODY 5-5