Yamaha WaveRunner GP1200R Manuel D'entretien page 142

FUEL
CARBURETOR
Regulator body inspection
1. Inspect:
Regulator body
Contaminants → Clean.
Damage → Replace.
Valve (clear film) 1
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.
Jet and carburetor body inspection
1. Inspect:
Main jet
Pilot jet
Carburetor body
Clog/contaminants → Clean.
Damage/wear → Replace.
CAUTION:
Do not use a steel wire to clean the jets.
This may enlarge the jet diameters and
seriously affect performance.
High- and low-speed adjusting screw
inspection
1. Inspect:
High-speed adjusting screw
Low-speed adjusting screw
Bends/damage/wear → Replace.
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