Yamaha YZ125(W)/W1 Owner's Service Manual page 236

CARBURETOR AND REED VALVE
4-11
EC464A00
Filter
1. Inspect:
9 Filter 1
Damage ¡ Replace.
NOTE:
Inspect the filter as it is assembled to the carbu-
retor. Do not remove the filter except when
replacing it.
EC464802
Fuel level
1. Measure:
9 Fuel level a
Out of specification ¡ Adjust.
Fuel level:
9.5~10.5 mm (0.37~0.41 in)
Above the float chamber
mating surface
Measurement and adjustment steps:
9Remove the drain plug.
9Connect the fuel level gauge adapter 2 and
fuel level gauge 1 to the float chamber.
Fuel level gauge adapter:
YM-01470/90890-01470
Fuel level gauge:
YM-1312-A/90890-01312
9Hold the fuel level gauge vertically next to
the float chamber mating surface.
9Measure the fuel level with the fuel level
gauge.
NOTE:
Keep the carburetor and fuel level gauge ver-
tically when measuring the fuel level.
9If the fuel level is not within specification, in-
spect the valve seat and needle valve.
9If either is worn, replace them both.
9If both are fine, adjust the fuel level by bend-
ing the float tab b on the float.
9Recheck the fuel level.
ENG