Fuel Joint, Fuel Filter, And Fuel Pump; Checking The Fuel Joint; Checking The Fuel Filter; Assembling The Fuel Filter - Yamaha 25BMH Wartungshandbuch

FUEL

FUEL JOINT, FUEL FILTER, AND FUEL PUMP

CHECKING THE FUEL JOINT

1. Check:
• Fuel joint
Cracks/damage/leak → Replace.
2
• Seal
Cracks/damage → Replace.
2. Measure:
• Fuel joint operation
Impossible to maintain the specified
pressure for 10 sec. → Replace.
Measuring steps
(1) Attach the
gauge set.
Vacuum/pressure pump gauge set
90890-06756
(2) Apply the specified pressure.
Specified pressure
50 kPa (0.5 kg/cm

CHECKING THE FUEL FILTER

Check:
• Filter cap
Cracks/damage→ Replace.
• Filter element
Cracks/damage/leak → Replace.
3
• O-ring
Cracks/damage → Replace.
4
• Cup
Foreign matter → Clean.

ASSEMBLING THE FUEL FILTER

(1) Install filter element to cap.
(2) Install O-ring to filter cup.
(3) Assemble cap and filter cup.
NOTE:
Start the engine and confirm the proper
function.
4-2
1
vacuum/pressure
2
, 7.25 psi)
1
2
E
pump