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FUEL
CARBURETOR
SERVICE POINTS
CAUTION:
Do not use steel wire for cleaning the jets.
This may enlarge the jet diameters and
seriously affect performance.
Diaphragm inspection
1. Inspect:
Diaphragm
Damage → Replace.
Float arm inspection
1. Inspect:
Float arm 1
Bends/damage → Repair or replace.
2. Measure:
Float arm height a
Float arm height:
0 ~ 0.2 mm (0 ~ 0.008 in)
NOTE:
Measure the distance between the surface
of the carburetor body b and the top sur-
face of the float arm.
The float arm should be resting on the
needle valve, but not compressing it.
Regulator body assembly inspection
1. Inspect:
Regulator body assembly 1
Contaminants → Clean.
Damage → Replace.
Valve 2
Damage → Replace.
Needle valve inspection
1. Inspect:
Needle valve
Needle valve seat
Contaminants a → Clean.
Wear b → Replace.
NOTE:
Always replace the needle valve and needle
valve seat as a set.
4-16
E
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