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CARBURETOR
EC464401
Jet needle
1. Inspect:
Jet needle 1
G
Bends/wear → Replace.
Clip groove
G
Free play exists/wear → Replace.
Clip position
G
Standard clip position:
No.2 Groove
Float height
1. Measure:
Float height a
G
Out of specification → Adjust.
Float height:
15.5 ~ 16.5 mm (0.61 ~ 0.65 in)
Measurement and adjustment steps:
Hold the carburetor in an upside down
G
position.
NOTE:
Slowly tilt the carburetor in the opposite
G
direction, then take the measurement
when the needle valve aligns with the float
arm.
If the carburetor is level, the weight of the
G
float will push in the needle valve, result-
ing in an incorrect measurement.
Measure the distance between the mating
G
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-
G
tion, inspect the valve seat and needle
valve.
If either is worn, replace them both.
G
If both are fine, adjust the float height by
G
bending the float tab 1 on the float.
Recheck the float height.
G
4 - 5
ENG
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