2001 Arctic Cat ATVs factory service and repair manual, Page 161Get this manual
Fig3-529
Fig3-531
ATV1027
14Seat the cam sprocket onto the camshaft making sure the alignment pin in the camshaft aligns with the smallest hole in the sprocket; then place the camshaftsprocket assembly onto the cylinder ensuring the followingFig3-530
! CAUTION
Care must be taken that the tab-washer is installed correctly to cover the alignment hole on the sprocketIf the alignment pin falls out, severe engine damage will resultFig3-532