The CRF150R uses a 32mm version of the Keihn FCR carb.
The service manual lists the stock CRF150R jetting as :
Main jet : 135
Pilot jet : 40
Needle : NHNT (3rd position from top)
Pilot screw 2 1/4 turns out
Idle speed 2100rpm + or - 100 rpm
Float level 7.0mm
Initial feedback is the pilot is a bit on the lean side, which is pretty common from Honda. A 45 pilot and some fine tuning on the pilot screw should do wonders, just like on the big CRFs.
The service manual lists the stock CRF150R jetting as :
Main jet : 135
Pilot jet : 40
Needle : NHNT (3rd position from top)
Pilot screw 2 1/4 turns out
Idle speed 2100rpm + or - 100 rpm
Float level 7.0mm
Initial feedback is the pilot is a bit on the lean side, which is pretty common from Honda. A 45 pilot and some fine tuning on the pilot screw should do wonders, just like on the big CRFs.
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