Yamaha YZ450F(S), Owner'S Service Manual

Page: 272 / 642

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ENG
CARBURETOR
11. Install:
●
Needle valve 1
●
Float 2
●
Float pin 3
NOTE:
●
After installing the needle valve to the float,
install them to the carburetor.
●
Check the float for smooth movement.
12. Install:
●
Pilot screw 1
●
Spring 2
●
Washer 3
●
O-ring 4
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.
Pilot screw:
2 turns out (example)
13. Install:
●
O-ring
●
Float chamber 1
●
Screw (float chamber) 2
●
Cable holder (throttle stop screw cable)
3
●
Hose holder (carburetor breather hose)
4
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.
4
2
1
3
4