1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 7Get this manual
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 4th groove 3rd groove Wet multi-plate type 6-speed, constant mesh .652 (6123) 2.570 (361 4) .062 (3316) 1.667 (301 8) 1.333 (2821) 1.083 (2 624) 1.087 (2523) .884 (2326) 0.920 (2325) .000 (3913) .923 (3813) Left foot operated return system, 1-N-2-3-4-5-6 CO 19 BTDC1 ,500150 rpm 21 BTDC1500 150 rpm Primary kick starter 159 kW5,000 rpm 0.154 kW5 ,000 rpm BR8ES {NGK} RN3C (CHAMP ION) BR9ES (NGK) RN2C (CHAMPION) 0.7-0.8 mm (0.028-0 .031 in) 12121255S0 W