Service Points; Carburetor Inspection - Yamaha 40V Service Manual

FUEL
CARBURETOR

SERVICE POINTS

CAUTION:
Do not use steelwire for cleaning the jets as
this may enlarge the jet diameters and seri-
ously affect performance.

Carburetor inspection

1. Inspect:
Carburetor body
Crack/Damage → Replace.
Contamination → Clean.
2. Inspect:
Pilot screw
Bend/Wear → Replace.
3. Inspect:
Main jet
Pilot jet
Main nozzle
Contamination → Replace.
4. Inspect:
Needle valve
Grooved wear → Replace.
5. Inspect:
Float
Crack/Damage → Replace.
6. Inspect:
Collar 1
Wear/Damage → Replace.
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