Yamaha YZ426F(M)/LC Owner's Service Manual page 262

CARBURETOR
4. Install:
Valve seat
Screw (valve seat) 1
Needle valve 2
Float 3
Float pin 4
NOTE:
After installing the needle valve to the float,
install them to the carburetor.
Check the float for smooth movement.
5. Install:
Pilot screw 1
Spring 2
Washer 3
O-ring 4
Note the following installation points:
Turn in the pilot screw until it is lightly
seated.
Turn out the pilot screw by the number of
turns recorded before removing.
Pilot screw:
1-3/4 turns out
* 1-1/2 turns out
(for reference only)
* Except for USA
6. Install:
Float chamber 1
Screw (float chamber) 2
Cable holder (throttle stop screw cable)
3
Hose holder (carburetor breather hose)
4
7. Install:
Diaphragm (accelerator pump) 1
Spring 2
O-ring 3
Cover 4
Screw (cover) 5
4 - 14
ENG