Yamaha YZ250(N)/LC Owner's Service Manual page 238

CARBURETOR AND REED VALVE
4-14
3. Install:
9Pilot air screw 1
9Throttle stop screw 2
Note the following installation points:
9Turn in the pilot air screw until it is lightly
seated.
9Turn out the pilot air screw by the number of
turns recorded before removing.
Pilot air screw:
1 turn out
*1-3/4 turns out
(for reference only)
*For EUROPE
4. Install:
9Starter plunger 1
5. Install:
9Pilot jet 1
9Main jet 2
6. Install:
9Needle valve 1
9Float 2
9Float pin 3
NOTE:
9After installing the needle valve to the float,
install them to the carburetor.
9Check the float for smooth movement.
7. Install:
9Float chamber 1
9Plate 2
9Screw (float chamber) 3
ENG