Yamaha YZ250(R)/LC Owner's Service Manual page 240

CARBURETOR AND REED VALVE
4-14
2. Install:
9 O-ring 1
9 Solenoid valve 2
9 Clamp 3
9 Screw (clamp) 4
To carburetor 5.
cC
9 Before installing the solenoid valve, blow
air on the solenoid valve and its installing
location on the carburetor in order to
remove any foreign particles such as chips
etc.
9 Apply the engine oil on the solenoid valve
thread.
3. Install:
9 Pilot air screw 1
9 Throttle stop screw 2
Note the following installation points:
9 Turn in the pilot air screw until it is lightly
seated.
9 Turn out the pilot air screw by the number of
turns recorded before removing.
Pilot air screw:
1 turn out
*7/8 turns out
(for reference only)
*For EUROPE
4. Install:
9 Starter plunger 1
5. Install:
9 Pilot jet 1
9 Main jet 2
ENG