Service Points; Fuel Joint Inspection; Fuel Filter Inspection; Fuel Pump Inspection - Yamaha 40V Service Manual

FUEL
FUEL JOINT, FUEL FILTER AND FUEL PUMP

SERVICE POINTS

Fuel joint inspection

1. Inspect:
Fuel joint
Crack/Leak/Damage → Replace.
2. Measure:
Fuel joint operation
Impossible to maintain the specified
pressure for 10 sec. → Replace.
Measuring steps:
Attach the Mity vac.
Mity vac:
YB-35956/90890-06756
Apply the specified pressure.
Specified pressure:
50 kPa (0.5 kg/cm

Fuel filter inspection

1. Inspect:
Filter element
Filter cup
Crack/Leak/Clog → Replace.
Contamination → Clean.

Fuel pump inspection

1. Inspect:
Body
Crack/Leak/Damage → Replace.
2. Inspect:
Seat valve
Crack/Distortion → Replace.
3. Inspect:
Diaphragm
Damage → Replace.
4-4
E
2
, 7.1 psi)