I was bleeding my brakes today and noticed that my rear caliper is loose. One of the nuts has apparently fallen off and the caliper is wobbling around. No big deal I thought, I'll just order another nut, right?



Here is the schematic on about every Yamaha OEM parts site. The part is missing! Red circle 1 shows there the nut threads on to and circle 2 is where the nut goes through. I distinctly remember it from when I replaced my brake pads. It's a tall nut, allen head. Any ideas on what I could do?

 

Take the one from the other side, and try it in the side with bolt missing. If it screws in, the threads are the same. I
f it doesn't the the missing one screws in counterclockwise. Take it to an auto parts or hardware store and have them match the length, outside diameter, and threads to a similar bolt.

Buy some Loctite, -non hardening- and put some on the bolt threads during reassembly. Torque with wrench to specs. Hit the trails.

before I go, are you sure bolt #13 is NOT the bolt you're looking for?.

 

13 mounts caliper bracket to the rear swingarm. I would go to the local dealer so you make sure its the right one, they might even have it in stock to get you back on the trail. Most auto parts dealers are not gonna carry a bolt like that.