2007-2011 Polaris IQ Snowmobiles Service Manual, Page 395Get this manual
Steering and Suspensions M-10 REAR SPRING PRELOAD
If FRA position alone does not allow the setup of the proper amount of sag, the center retainer of the rear track shock can be replaced with optional retainers to adjust the preload and change the sagNOTE: By design, the BIASED COUPLE design of the M-10 suspension displaces the rear arm as the front arm is compressedThis means that when you raise the front limiter strap, at some point you will collapse the rear suspension arm, which will affect SAG height and reduce rear suspension travelB Sag A
Optional Retainers
Retainer insert Part Number Retainer part Number 5135077 (stdon M10128) 5436109 5134923 5135080 (stdon M10136) Preload
Least Middle Most
Most Middle Least