Fuel Pump Inspection - Suzuki RM-Z250 Service Manual

• Connect a proper lead wire into the fuel pump coupler (fuel
pump side) and apply 12 volts to the fuel pump (between ter-
minal A and terminal B) and check the fuel pressure.
Battery + terminal
Battery - terminal
 Fuel pressure: Approx. 294 kPa (2.94 kgf/cm
If the fuel pressure is lower than the specification, inspect the
following items:
* Fuel hose leakage
* Clogged fuel filter
* Pressure regulator
* Fuel pump
If the fuel pressure is higher than the specification, inspect the
following items:
* Fuel pump
* Pressure regulator

* Before removing the special tools, disconnect the
battery and release the fuel pressure slowly.
* Gasoline is highly flammable and explosive. Keep
heat, sparks and flame away.

FUEL PUMP INSPECTION

Connect a proper lead wire into the fuel pump coupler (fuel
pump side) and apply 12 volts to the fuel pump (above) and
check that the fuel pump operates.
If the fuel pump motor does not make operating sound, replace
the fuel pump with a new one.
If the fuel pump is OK, the cause may lie in the TO sensor or TO
sensor circuit. (12-48)
terminal A (Red wire)
terminal B (Black wire)
FUEL SYSTEM AND THROTTLE BODY 13-5
, 41.81 psi)
2