5.12
FUEL SYSTEM
3. Inspect the idle speed adjust screw tip for flat spots and the
pilot mixture screw tip for damage. If any damage is
present on either screw, it must be replaced.
Float Height Adjustment
1. Place the carburetor at a level position to remove weight
from float arm. In this position, the float tongue will rest
slightly outward.
2. With the carburetor at rest and level, slightly tilt the
carburetor back. The float should fall into the correct position,
with the float tongue resting lightly on the inlet needle valve
pin without compressing the spring. The bottom of the float
should be parallel with the float bowl mating surface.
IMPORTANT: When measuring the height, verify the
inlet needle valve spring is not compressed.
NOTE: If the float is past parallel with the mating
surface, the carburetor has likely been tilted back
4. Inspect the float bowl vent tube for cracks near the bottom
of the tube.
NOTE: A continuous fuel leak from the carburetor
drain hose can be a result of a cracked bowl vent
tube.
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