Yamaha WR450F(R) Owner's Service Manual page 141

5
6
1
2 3
4
4 - 18
CARBURETOR
15. Install:
Diaphragm (accelerator pump) 1
G
Spring 2
G
O-ring 3
G
Cover 4
G
Hose holder (drain hose) 5
G
Screw (cover) 6
G
NOTE:
Install the diaphragm (accelerator pump) with
its mark a facing the spring.
16. Install:
Jet needle 1
G
Collar 2
G
Spring 3
G
Needle holder 4
G
Throttle valve plate 5
G
To throttle valve 6.
17. Install:
Throttle valve assembly 1
G
Screw (throttle shaft) 2
G
NOTE:
Install the valve lever rollers 3 into the slits a
of the throttle valve.
18. Install:
O-ring 1
G
Valve lever housing cover 2
G
Bolt (valve lever housing cover) 3
G
19. Install:
Carburetor breather hose 1
G
Refer to "CABLE ROUTING DIA-
GRAM" section in the CHAPTER 2.
ENG