Yamaha YFM250XL(C) Service Manual page 179

CARBURETOR
2.Remove:
Pilot air jet 1
3.Remove:
Float chamber 1
O-ring 2
4.Remove:
Float pin 1
Float 2
Needle valve 3
NOTE:
Remove the float pin in the direction of the
arrow.
5.Remove:
Throttle stop screw 1
Valve seat 2
Main jet 3
Pilot jet 4
Pilot screw set 5
6.Remove:
Needle jet 1
NOTE:
Remove the needle jet towards the piston
valve side.
5 - 3
CARB
5