1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 7Get this manual
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GENERAL INFORMATION CARBURETOR Type Identification number Pist on valve PJ 05A PJ 07A PJ07B PJ07C150152158155 34 mm (1 .3 in) #48 #45 #42 16 mm (0.63 in) 1-78 turns out 1-34 turns out 1-12 turn out 4t