Yamaha YZ250(P)/LC Owner's Service Manual page 232

CARBURETOR AND REED VALVE
4-10
EC464000
INSPECTION
EC464130
Carburetor
1. Inspect:
9
Carburetor body
Contamination ¡ Clean.
NOTE:
9
Use a petroleum based solvent for cleaning.
Blow out all passages and jets with com-
pressed air.
9
Never use a wire.
2. Inspect:
9
Main jet 1
9
Pilot jet 2
9
Power jet 3
Contamination ¡ Clean.
NOTE:
9Use a petroleum based solvent for cleaning.
Blow out all passages and jets with com-
pressed air.
9Never use a wire.
EC464210
Needle valve
1. Inspect:
9
Needle valve 1
9
Valve seat 2
Grooved wear a ¡ Replace.
Dust b ¡ Clean.
EC464310
Throttle valve
1. Check:
9
Free movement
Stick ¡ Repair or replace.
NOTE:
Insert the throttle valve 2 into the carburetor
body while pulling up the lever 1, and check for
free movement.
ENG