Yamaha YZ 2002 Series, Owner'S Service Manual

Page: 234 / 568

4-11
ENG
CARBURETOR AND REED VALVE
Measurement and adjustment steps:
9
Remove the drain plug.
9
Connect 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
9
Hold the fuel level gauge vertically next to
the float chamber mating surface.
9
Measure the fuel level with the fuel level
gauge.
NOTE:
Keep the carburetor and fuel level gauge ver-
tically when measuring the fuel level.
9
If the fuel level is not within specification, in-
spect the valve seat and needle valve.
9
If either is worn, replace them both.
9
If both are fine, adjust the fuel level by bend-
ing the float tab
b
on the float.
9
Recheck the fuel level.
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
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.