Yamaha YZ450F, Owner'S Service Manual

Page: 278 / 650

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