2007 Arctic Cat Four-Stroke Factory Service Manual, Page 328Get this manual
16Remove the top sprocket, chain, and idler gearAccount for one shim washer located behind the idler gear
20Remove the three lock nuts (A) securing the top bearing flange plateRemove the flange plate, seal, and bearing; then remove the three lock nuts (B) securing the bottom bearing flange plateRemove the flange plate, seal, and bearing
! NOTE: If the chain is too tight and will not allow the top sprocket to be removed, remove the PTOside driven shaft bearingThis will allow the driven shaft to be lifted at the PTO-side and will loosen the chain