2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 210Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 210

9Using Crankcase SeparatorCrankshaft Remover (pn 0444-009), remove the crankshaft MD1329 MD1330 7Remove the counterbalance
output shaft assembly unless absolutely necessaryIf the shaft is removed, the shaft nut must be replaced with new one and
the shaft must be re-shimmed 10Remove the secondary drive gearsecondary driven gear retaining nutFrom inside the crankcase