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1991 Yamaha Big Bear 350 4X4 - Damaged axle threads HELP

83 views 5 replies 3 participants last post by  newpain01  
#1 ·
Hey everyone!

I recently got a 1991 Yamaha Big Bear 350 4X4 project ATV and I've been working to restore it, rebuilt the top-end and got it running after sitting for over 10 years and now I am slowly getting to other repairs.

The other day I found that the axle threads on the rear right side (rear break side) are damaged. That's the side where the #25 nut screws on (diagram below). I want to try and re-thread those threads, but I can't find the correct threads size.

I think that might be 16mm x 1.50 (at least that's the one on the 400), but I measured the diameter of the axle and it's 15mm, so I am just guessing here.

Any ideas what the correct thread size is or where to find that info?


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#2 ·
Go to partzill.com, maybe you can buy the nut; then go to the hardware store to determine the thread size by trying bolts.
 
#4 ·
Try a bolt supplier for heavy equipment.