CARBURETOR

ENG

Measurement and adjustment steps:

Hold the carburetor in an upside down position.

NOTE:

Slowly tilt the carburetor in the opposite direction, then take the measurement when the needle valve aligns with the float arm.

If the carburetor is level, the weight of the float will push in the needle valve, result- ing in an incorrect measurement.

Measure the distance between the mating surface of the float chamber and top of the float using a vernier calipers.

NOTE:

The float arm should be resting on the nee- dle valve, but not compressing the needle valve.

If the float height is not within specifica- tion, inspect the valve seat and needle valve.

If either is worn, replace them both.

If both are fine, adjust the float height by bending the float tab b on the float.

Recheck the float height.

EC464600

Float

1.Inspect:

Float 1

Damage Replace.

Starter plunger

1.Inspect:

Cold starter plunger 1

Hot starter plunger 2 Wear/damage Replace.

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Yamaha WR45OFR service manual Measurement and adjustment steps, Float, Starter plunger