Yamaha WR250F Manuel D'atelier page 300

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CARBURETOR
14. Install:
Diaphragm (air cut valve) 1
Spring (air cut valve) 2
O-ring 3
Air cut valve cover 4
Screw (air cut valve cover) 5
15. Install:
Diaphragm (accelerator pump) 1
Spring 2
O-ring 3
Accelerator pump cover 4
Bolt (accelerator pump cover) 5
NOTE:
Install the diaphragm (accelerator pump) with
its mark a facing the spring.
16. Install:
Jet needle 1
Collar 2
Spring 3
Needle holder 4
Throttle valve plate 5
To throttle valve 6.
17. Install:
Throttle valve assembly 1
Screw (throttle shaft) 2
NOTE:
Install the valve lever rollers 3 into the slits a
of the throttle valve.
18. Install:
O-ring 1
Valve lever housing cover 2
Bolt (valve lever housing cover) 3
ENG