It is a bear with the exhaust on. Try to get a "mental picture" and feel around for the bolts that hold it to the case. On my XLT 800 (PV) they were different sizes. Try to get at it from all the angles to see what works best. An army of long, short, wobble, and U joints should help you attack it without removing the exhaust. If you get stuck, have a beer, then comeback at it, worked for me, found an angle that worked for me. Follow Dave's advice, he is the resident Yamaha Wikipedia.