2009-2010 Polaris RZR Factory Service Manual, Page 184Get this manual
BODYSTEERINGSUSPENSION FOXTM SHOCK SERVICE (RZR S)
General Service Information
Recommended Service Intervals FOXTM Racing Shocks will perform the best if serviced at regular intervals: Every rideWash and dry the vehicle and suspension Every 100 hoursVisually inspect shock seals Every 500 hours or AnnuallyChange shock oil and seals
Rear Shock Service Information