2009 Polaris Outlaw 450/525 Service Manual, Page 113Get this manual
BODYSTEERINGSUSPENSION 6Insert IFP10Remove IFP bleeder screw
Install body cap until Oring is lightly seatedMount shock in vise by top eyelet as shownSupport shock and strike body cap end 23 times with soft faced hammer to remove all air trapped inside the valve pistonAllow shock to stand for 35 minutes