2008 Polaris ATV Outlaw 450/525 Service Manual, Page 71Get this manual
BODYSTEERINGSUSPENSION STEERING KNUCKLE
Removal
12Follow the steps in the "FRONT HUB REMOVAL" section to remove the hub, if neededRemove the upper and lower ball joint cotter keys and castle nutsCastle Nuts 4Tap down on the lower A-arm to move the lower ball joint from the steering hub
Installation
1234Before installation check the condition of the ball jointsJoints should move freely and have no axial playPlace the upper and lower A-arms into the steering hubInstall the castle nuts onto the upper and lower A-armsTorque the nuts to 35 ft.lbs(47 Nm)Install new cotter pins into the castle nuts and ball joints