1985-1986 Honda ATC250R Shop Manual, Page 164Get this manual

1985-1986 Honda ATC250R Shop Manual, Page 164

REAR WHEElDRIVE MECHANISM DRIVEN SPROCKET Move the ends of the axle to back and forth, and up and down to check the wheel bearing playIf the play is excessive, replace the wheel bearings (Page 119)Remove the swing arm lower guard by removing the four boltsRemove the four sprocket bolts and remove the driven sprocket from the sprocket hub
SWING ARM LOWER GUARD

CHECK PLAY

Remove the caliper bracket bolts and raise the caliper off the brake disc