Yamaha WR450F(T) Owner's Service Manual page 322

EC466020
HANDLING NOTE
1
Do not loosen the screws {TPS (throttle
position sensor)} 1 except when changing
the TPS (throttle position sensor) due to
failure because it will cause a drop in
engine performance.
INSPECTION
Carburetor
1. Inspect:
NOTE:
• Use a petroleum based solvent for cleaning.
• Never use a wire.
2. Inspect:
NOTE:
• Use a petroleum based solvent for cleaning.
• Never use a wire.
4 - 11
CARBURETOR
CAUTION:
• Carburetor body
Contamination → Clean.
Blow out all passages and jets with com-
pressed air.
• Main jet 1
• Pilot jet 2
• Needle jet 3
• Starter jet 4
• Pilot air jet 5
• Leak jet 6
Damage → Replace.
Contamination → Clean.
Blow out all passages and jets with com-
pressed air.
ENG