Yamaha EK25BMH Service Manual - Fuel

FUEL JOINT, FUEL FILTER, AND FUEL PUMP

FUEL

4-3

E

CHECKING THE FUEL JOINT

1. Check:

•

Fuel joint 

Cracks/damage/leak 

→

 Replace.

•

Seal 

Cracks/damage 

→

 Replace.

2. Measure:

•

Fuel joint operation

Impossible to maintain the specified

pressure for 10 sec. 

→

 Replace.

Measuring steps

(1) Attach the vacuum/pressure pump

gauge.

(2) Apply the specified pressure.

CHECKING THE FUEL FILTER

Check:

•

Filter cap 

Cracks/damage

→

 Replace.

•

Filter element 

Cracks/damage/leak 

→

 Replace.

•

O-ring 

Cracks/damage 

→

 Replace.

•

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.

Vacuum/pressure pump gauge set

90890-06756

Specified pressure

50 kPa (0.5 kg/cm

2

, 7.25 psi)

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