2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 467Get this manual
FRONT DRIVING MECHANISM Apply grease to new oil seal tips and install them into he di fferen tial case and cover
ATIACHMENT
Attachment, 20 mm I.D
07746-002 0400
PINION NEEDLE BEARING
s tete the stopper ring nt il the end or the stopper ring appears in the access holeStrike gen tly near the end of the ring with punch to bent the end upwardGrasp the end of th ring with need le-nosed pliers and ull th stopper ring out through the access hole Besure ro weilr Heat he gea case abo ut 80'C (176"F) and heavy gloves to remove the needle bearing by using the special avoid burns wilen toolshandhn9 the heated gIJlIl case