1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 70Get this manual
CYLINDER HEADV ALVES Tighten the cam sprocket bolt on the punch mark side first,
III CAM SP,.OCKET BOLT
then turn the ranks haft clockwise one turn and tighten the remaining sprocket bolt to the same torqueTORQUE; 1723 Nm 11 .72.3 kg-m1217 ft -Ibl
Realign theT" mark with index mark and recheck the cam sprocket timing marks
(,) TIMING MARKS