1981-1984 Official Honda ATC250R Shop Manual, Page 242Get this manual
HONDA '83 ATC250R ADDENDUM
Check the steering stem bearing for damage or wearRemove the bearing from the steering stem if it is damaged or worn
Replace the bearings and bearing races as set
Remove the bearing from the frame head pipe with the race remover 07953-4250002Install new bearing races into the head pipe with these tools: Driver, 07749-0010000 Attachment, 42 47 mm, 07746-0010300