Yamaha WR450F(R) Owner's Service Manual page 140

1
5
4
5
3
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.
* Except for USA
13. Install:
4
G
G
2
G
G
3
G
5
G
14. Install:
G
1
G
2
G
G
G
4 - 17
ENG
Needle valve 1
Float 2
Float pin 3
Pilot screw 1
Spring 2
Washer 3
O-ring 4
Pilot screw:
1-3/4 turns out (example)
*1-1/2 turns out (example)
O-ring
Leak jet 1
Float chamber 2
Screw (float chamber) 3
Cable holder (throttle stop screw cable)
4
Hose holder (carburetor breather hose)
5
Diaphragm (air cut valve) 1
Spring (air cut valve) 2
O-ring 3
Air cut valve cover 4
Screw (air cut valve cover) 5