1985-1986 Honda ATC250R Shop Manual, Page 152Get this manual
FRONT WHEELSUSPENSIONSTEERING FORK TUBE BUSHING Install the piston ring on the pistonInstall the fork tube bushing if new one is being installedInstall the rebound spring and piston into the fork tubePlace the oil lock piece on the end of the piston and insert the fork tube into the slider
01 LOCK PIECE
Place the fork sl ider in vise with soft jaws or shop towelClean the socket bolt threads and apply thread lock agent to the threadsScrew the socket bolt into the piston and tighten it with mm hex wrenchNOTETemporarily install the fork springs and fork tube cap to tighten the socket bolt