CARBURETOR

ENG

12

Starter plunger

1.Inspect:

Cold starter plunger 1

Hot starter plunger 2 Wear/damage Replace.

Accelerator pump

1.

Inspect:

 

• Diaphragm (accelerator pump) 1

 

• Spring (accelerator pump) 2

 

• Accelerator pump cover 3

 

O-ring 4

 

• Push rod 5

 

Tears (diaphragm)/damage Replace.

 

Dirt Clean.

2.

Inspect:

 

• Throttle shaft 1

 

• Spring 2

12

5 6

34

3

4

• Lever 1 3

• Spring 1 4

• Lever 2 5

• Spring 2 6

Dirt Clean.

Air cut valve

1.Inspect:

Diaphragm (air cut valve) 1

Spring (air cut valve) 2

Air cut valve cover 3

O-ring 4

Tears (diaphragm)/damage Replace.

ASSEMBLY AND INSTALLATION Carburetor

1.Install:

• Cold starter plunger 1

4 - 14

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Image 136
Yamaha WR250FM service manual Starter plunger, Accelerator pump, Air cut valve, Assembly and Installation Carburetor