Measuring And Adjusting The Fuel Level - Yamaha MIO Service Manual

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EAS00498
MEASURING AND ADJUSTING THE FUEL
1
LEVEL
1. Measure:
• fuel level a
a
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a. Connect the carburetor to a temporary fuel
b. Install the fuel level gauge 1 onto the fuel
c. Loosen the fuel drain screw 3.
d. Hold the fuel level gauge vertically next to
e. Measure the fuel level a.
NOTE:
Make sure that the carburetor is level. The car-
buretor must be level to measure the fuel level
correctly.
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2. Adjust:
• fuel level
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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 level again.
e. Repeat steps (a) to (d) until the fuel level is
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5 - 8
CARBURETOR
Out of specification → Adjust.
Fuel level (above the float cham-
ber mating surface)
7.0 ~ 9.0 mm (0.28 ~ 0.35 in)
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tank and supply fuel to the carburetor.
drain pipe 2.
Fuel level gauge
90890-01312
the float chamber 4.
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valve.
slightly bending the float tang 1.
within specification.
LLL L LLL L L LLL L L LLL
CARB
M M MMM M M MMM M
L L LLL L L LLL L
M M MMM M M MMM M
L L LLL L L LLL L
MMM
LLL
MMM
LLL