Measuring And Adjusting The Fuel Level; Checking The Fuel Cock - Yamaha YZ85W1 Service Manual

CARBURETOR AND REED VALVE
2. Adjust:
Refer to "ADJUSTING THE THROTTLE
CABLE FREE PLAY" in chapter 3.
EAS00498
MEASURING AND ADJUSTING THE FUEL
LEVEL
1. Measure:
a. Hold the carburetor in an upside down posi-
b. Measure the distance between the mating
NOTE: NOTE:
The float arm should be resting on the needle
valve, but not compressing the needle valve
2. Adjust:
a. Check the needle valve seat and needle
b. If either is worn, replace them as a set.
c. If both are fine, adjust the float level by
d. Measure the fuel height again.
e. Repeat steps (c) to (d) until the fuel level is
EAS00505

CHECKING THE FUEL COCK

1. Check:
2. Check:
7-9
• throttle cable free play
Throttle cable free play
3 ~ 5 mm (0.12 ~ 0.20 in)
• fuel height
Out of specification → Adjust.
Fuel height
18 ~ 20 mm (0.71 ~ 0.79 in)
tion.
surface of the float chamber and top of the
float using a vernier calipers.
• fuel level
valve.
slightly bending the float tang
within specification.
• fuel cock
Cracks / damage / wear → Replace.
• fuel cock strainer
Obstruction → Clean.
Blow out the jets with compressed air.
Damage → Replace.
CARB
.