2007 Arctic Cat Four-Stroke Factory Service Manual, Page 497Get this manual
4Remove the cap screw and lock nut securing the rear arm to the slide railAccount for the serrated axles and axle tube
CLEANING AND INSPECTING
! NOTE: Whenever part is worn excessively, cracked, or damaged in any way, replacement is necessary
1Clean the bearings with clean cloth2Inspect each idler wheel for cracks or damage3Inspect the bushings (located in the arm pivot area) for wear or damage4Inspect all welds and the tubing of the rear arm idler arm for cracks or unusual bendsZJ268A