2008 Arctic Cat 366 ATV Service Manual, Page 128Get this manual
Troubleshooting Problem: Suspension too soft Condition
1Spring(s) weak 2Shock absorber damaged 3Shock absorber preload too low
1Replace spring(s) 2Replace shock absorber 3Adjust shock absorber preload
Problem: Suspension too stiff Condition
1A-arm-related bushings worn 2Shock absorber preload too high
1Replace bushing 2Adjust shock absorber preload