Yamaha YZ450F Manuel D'atelier Du Proprietaire page 272

4
CARBURETOR
11. Install:
G
G
G
NOTE:
After installing the needle valve to the float,
G
install them to the carburetor.
Check the float for smooth movement.
G
12. Install:
G
G
G
G
Note the following installation points:
Turn in the pilot screw until it is lightly
G
seated.
Turn out the pilot screw by the number of
G
turns recorded before removing.
13. Install:
3
G
G
1
G
G
2
4
G
14. Install:
G
G
G
G
G
G
NOTE:
Install the diaphragm (accelerator pump) with
its mark a facing the spring.
4 - 17
Needle valve 1
Float 2
Float pin 3
Pilot screw 1
Spring 2
Washer 3
O-ring 4
Pilot screw:
2 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
Hose holder (drain hose) 5
Screw (cover) 6
ENG