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CARBURETOR
EC464301
Throttle valve
1. Check:
Free movement
G
Stick → Repair or replace.
NOTE:
Insert the throttle valve 1 into the carburetor
body, and check for free movement.
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
Fuel level
1. Measure:
Fuel level a
G
Out of specification → Adjust.
Fuel level:
6.0 ~ 7.0 mm (0.24 ~ 0.28 in)
Below the float chamber mat-
ing surface
Measurement and adjustment steps:
Connect the fuel level gauge 1 to the float
G
chamber.
Fuel level gauge:
YM-1312-A/90890-01312
Hold the fuel level gauge vertically next to
G
the float chamber mating surface.
Loosen the drain screw.
G
Measure the fuel level with the fuel level
G
gauge.
NOTE:
Keep the carburetor and fuel level gauge
vertically when measuring the fuel level.
If the fuel level is not within specification,
G
inspect the needle valve seat and needle
valve.
If either is worn, replace them both.
G
If both are fine, adjust the fuel level by
G
bending the float tab b on the float.
Recheck the fuel level.
G
4 - 7
ENG
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