2010 Polaris Sportsman 850 Service Manual, Page 272Get this manual
BODYFRAME 6Using suitable pliers or spanner wrench (shown below) adjust the shock to the desired spring preloadShown decreasing spring preload
Reinstall the shock into the vehicle and torque the upper and lower shock fasteners to 38 ftlbs(51 Nm)
38 ftlbs(51 Nm)