2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 23Get this manual
MAINTENANCE
MAINTENANCE QUICK REFERENCE CONT'D
8Rear Axle Bearings
7Tie Rod End
9Swing Arm Bushings 5Front Wheel Bearings
6Ball Joint
Ill# Item Front Wheel Bearings Ball Joint Tie Rod Ends Rear Axle Bearings Swing Arm Bushings Lube RecSealed; Replace Polaris All Season Grease Polaris All Season Grease Polaris All Season Grease Polaris All Season Grease Method Inspect and replace bearings if necessary Locate grease fitting on back side of struts and grease with grease gunLift bootClean away dirt and greaseApply fresh grease by hand and reassembleLocate grease fitting on eccentric and grease with grease gunLocate grease fitting on swing arm and grease with grease gunFrequency Annually Semi-annually Semi-annually Semi-annually Semi-annually