Inspection - Yamaha TTR250L Service Manual

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CARBURETOR

INSPECTION

1.Inspect:
Carburetor mixing chamber body
Carburetor float chamber body
Contamination → Blow out passages with
compressed air.
NOTE:
Use a petroleum based solvent for cleaning.
(Do not use any caustic carburetor cleaning
solution.)
Blow out all passages and jets with com-
pressed air.
CAUTION:
The starter jet is press-fit, so it is unre-
movable.
Do not use a wire for cleaning.
2.Inspect:
Main jet 1
Main nozzle 2
Pilot jet 3
Pilot screw 4
Wear/damage → Replace.
Clogs → Blow out the jets with com-
pressed air.
3.Inspect:
Starter jet 1
Contamination → Clean.
NOTE:
The starter jet is of a fixed type.
4.Inspect:
Throttle valve 1
Scratches/wear/damage → Replace dia-
phragm assembly.
Jet needle 2
Wear/bend/damage → Replace.
5 - 5
CARB

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Ttr250c

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