FI90CHECKING THE FUEL PUMP ANDPRESSURE REGULATOR OPERATION1. Check:• fuel pump operationRefer to “SEAT AND FUEL TANK” inCHAPTER 5.a. Remove the seat and fuel tank.Refer to “SEAT AND FUEL TANK” inCHAPTER 5.b. Connect the pressure gauge andadapter onto the fuel injection pipe.c. Install the fuel tank.Refer to “SEAT AND FUEL TANK” inCHAPTER 5.d. Start the engine.e. Measure the fuel pressure.Faulty → Replace the fuel pump assembly.Pressure gauge90890-03153, YU-03153Adapter90890-03176, YM-03176Fuel pressure250 kPa (2.5 kg/cm 2, 36.3 psi)THROTTLE BODIES
