YAMAHA Marine F4A Manual De Servicio página 116

FUEL
3
4
CARBURETOR
2
1
SERVICE POINTS
Carburetor
1. Remove:
Float pin 1
9
Float 2
9
9 Needle valve
NOTE:
When removing the float pin 1, tap it in
arrow direction 4 from pivot of the pipe
joint side 3 as shown.
Carburetor inspection
cC
Do not use a steel wire to clean the jets.
This may enlarge the jet diameters and
seriously affect performance.
1. Inspect:
9 Carburetor body
Cracks/Damage ® Replace.
Contamination ® Clean.
2. Inspect:
9 Main jet
9 Pilot jet
9 Main nozzle
Contamination ® Clean.
3. Inspect:
Needle valve
9
9 Pilot screw (Except for USA)
Grooved wear ® Replace.
4. Inspect:
9 Float
Cracks/Damage ® Replace.
5. Inspect:
9 O-ring
Wear/Cracks/Damage ® Replace.
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