I have been trying to find info. on adjusting the distance between the clutch fingers and the bearing. This is not covered in the manual. Mistery solved thanks to Tommy. The JM604 has a bolt with an alen key end and a nut to secure it. (no double nut like the smaller tractors). From the side you cannot see this, however Tommy had a spare clutch and took a pic. I can now set the fingers so they are all equal distance fron the bearing and then adjust the distance to the bearing 2.5mm. I wil see if I can post a pic. Cheers