Needle Valve Inspection; Throttle Valve Inspection; Jet Needle Inspection - Yamaha YZ125(R)/LC Owner's Service Manual

CARBURETOR AND REED VALVE
4-10
2. Inspect:
9 Main jet 1
9 Main jet holder 2
9 Pilot jet 3
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.
EC464200
Needle valve
1. Inspect:
9 Needle valve 1
9 Valve seat 2
Grooved wear a ¡ Replace.
Dust b ¡ Clean.
NOTE:
Always replace the needle valve and valve seat
as a set.
EC464301
Throttle valve
1. Check:
9 Free movement
Stick ¡ Repair or replace.
NOTE:
Insert the throttle valve 1 into the carburetor
body, and check for free movement.
EC464401
Jet needle
1. Inspect:
9 Jet needle 1
Bends/Wear ¡ Replace.
9 Clip groove
Free play exists/Wear ¡ Replace.
9 Clip position
Standard clip position:
No.3 Groove
*No.4 Groove
*For EUROPE
ENG