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4-23
FUEL
E
CARBURETOR
SERVICE POINTS
NOTE:
Before disassembling the carburetor, make
sure to note the number of times the pilot
screw is turned in from its set position to
the seated position.
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.
Accelerator pump body inspection
1. Inspect:
● One way valve
Crack/damage → Replace the acceler-
ator pump body.
● Fuel passage
Clog → Clean or replace.
Arm inspection
1. Inspect:
● Arm 1
Bends/damage → Repair or replace.
2. Measure:
● Arm height a
NOTE:
● Measure the distance between the surface
of the carburetor body b and the top sur-
face of the arm.
● The arm should be resting on the needle
valve, but not compressing it.
Arm height:
0–0.2 mm (0–0.008 in)
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