2003 Kawasaki KLF250 Service Manual., Page 49Get this manual
3-12 FUEL SYSTEM Carburetor
Float Bowl Mating Surface [A] Float Valve Needle Rod (contacted but unloaded) [B] Float [C] Float Height [D] If the fuel level cannot be adjusted by this method, the float or the float valve is damagedAssemble the carburetor, install it on the vehicle, and recheck the fuel level
Fuel System Cleanliness Inspection
the Fuel System Cleanliness Inspection in the Refer to Maintenance chapterPeriodic