Possible Cause: Lack of lubrication to gears and/or bearings.
Solution: Add light lubrication (oil, not grease) to gears and bearings.
Possible Cause: Lack of cleaning or maintenance has allowed dirt or debris in gear system.
Solution: Clean inside of reel by disassembling side covers, rinsing, and lubricating with light oil. While reassembling reel side covers, be sure not to force. Handle may have to be slightly turned to insure proper alignment of level wind gear.
Possible Cause: Gears are stripped or damaged.
Solution: Have an authorized technician replace gear set. Find an Authorized Service Center near you.