Yamaha 2001 YZ426F/LC Owner's Service Manual page 268

4
CARBURETOR
11. Install:
NOTE:
After installing the needle valve to the float,
install them to the carburetor.
Check the float for smooth movement.
12. Install:
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.
13. Install:
3
1
2
4
14. Install:
NOTE:
Install the diaphragm (accelerator pump) with
its mark a facing the spring.
4 - 16
Valve seat
Screw (valve seat) 1
Needle valve 2
Float 3
Float pin 4
Pilot screw 1
Spring 2
Washer 3
O-ring 4
Pilot screw:
1-1/4 turns out (example)
O-ring
Float chamber 1
Screw (float chamber) 2
Cable holder (throttle stop screw cable)
3
Hose holder (carburetor breather hose)
4
Diaphragm (accelerator pump) 1
Spring 2
O-ring 3
Cover 4
Screw (cover) 5
ENG