Fuel Level Adjustment - Yamaha RS90K Service Manual

CARBURETORS AND FUEL PUMP
1

FUEL LEVEL ADJUSTMENT

1. Measure:
• Fuel level a
Out of specification → Adjust.
Fuel level (below the line on the float
chamber):
0.2 ~ 2.2 mm (0.008 ~ 0.087 in)
Measurement steps:
• Install the fuel level gauge 1 to the fuel drain
pipe 2.
Fuel level gauge:
90890-01312, YM-01312-A
• Loosen the fuel drain bolt.
• Hold the fuel level gauge vertically next to the
line on the float chamber.
• Measure the fuel level a on both sides of the
carburetor assembly.
NOTE:
The fuel level readings should be equal on both
sides.
2. Adjust:
• Fuel level
Adjustment steps:
• Remove the carburetor assembly.
• Inspect the needle valve seat and needle valve.
• If either is worn, replace them as a set.
• If both are fine, adjust the float height by bend-
ing the float tang 1 or the float.
• Recheck the fuel level.
7-10
CARB