Yamaha YZ250F(R) Owner's Service Manual page 121

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:
1-5/8 turns out (example)
13. Install:
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
14. Install:
Diaphragm (accelerator pump) 1
●
Spring 2
●
O-ring 3
●
Accelerator pump cover 4
●
Hose holder (drain hose) 5
●
Screw (accelerator pump cover) 6
●
NOTE:
Install the diaphragm (accelerator pump) with
its mark a facing the spring.
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ENG