Carburetor And Reed Valve - Yamaha YZ85(T) Owner's Service Manual

CARBURETOR AND REED VALVE

5PA40180
5PA40190
5PA40200
5PA40210
4 - 10
Float height
1. Measure:
Float height a
G
Out of specification → Adjust.
Float height:
18 ~ 20 mm (0.71 ~ 0.79 in)
Measurement and adjustment steps:
Hold the carburetor in an upside down
G
position.
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 specification,
G
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 b on the float.
Recheck the float height.
G
EC464600
Float
1. Inspect:
Float 1
G
Damage → Replace.
EC464701
Reed valve
1. Measure:
Reed valve bending a
G
Out of limit → Replace.
Reed valve bending limit:
0.2 mm (0.008 in)
ENG