2007 Yamaha Apex Factory Service Manual, Page 553Get this manual

2007 Yamaha Apex Factory Service Manual, Page 553

GEAR SELECTION Clutch weight Parts noWeight (oz) without bush and rivets ShapeID mark INSP ADJ Standard 8BU-17605-20 45.41
(1.60) 8CH-17605-10 35.32 (1.247) 8DG-17605-00 34.26 (1.209) 8DJ-17605-00 37.77 (1.333) 8DN-17605-10 39.76 (1.40) 8ES-17605-00