Looking for replacement shear bolts, but apparently they do not make them anymore for this model. Any suggestions?
The auger shear bolts are grade 5 but they are undercut to shear cleanly in the middle where they pass through the auger gearbox shaft. The impeller shear bolt is a grade 2 bolt with no undercutting, and it will shear if the impeller is stopped for any reason. Keep in mind that the shear bolts protect the other parts of the snowblower, and by comparison, they are extremely inexpensive even if you have to pay Kubota's ridiculous prices. A new gearbox will cost north of $600, and a broken chain is about $80. The broken chain is about 45 minutes to replace, but a gearbox is multiple hours of labor to get it out and the new one in. Even with the proper shear bolts installed properly, there is no guarantee that other damage might not happen. I picked up a rock with my snowblower about 15 years ago, and the snowblower parts inventory at the dealerships wasn't that good. I had to straighten the fan and the auger. The fan was never right, and even though I did get a replacement when it became available, I didn't have the desire to take everything apart to change it. I used that snowblower for the next 12 or 13 years with its vibration, and it never failed. This past fall I purchased a used snowblower and it had the correct shear pin installed, but it was installed with a lock washer under the head of the shear bolt. I had a heck of a time getting it out because it was slightly bent. My guess is that it would have sheared had it been properly installed. Snowblowers are one piece of equipment that requires a lot of detailed attention to getting the best out of them. Proper maintenance is the key to longevity.The other day, @Chanceywd prompted me to check my shear pin supply for my BX2750D snowblower. He's nearby to me, and we both had a bunch of wet snow predicted.
Some part numbers give dimensions, mine are 5/16x2 1/4". Notice I have some in my stash that are 2 1/2". All came from Kubota dealership.
There's 2 grades - the grade 2 (or 5?) is for the auger, the grade 8 (?) is for the implellor, depending on the configuration of the implellor attachment -- could be grade 5....
I'm guessing if you get a couple "real" ones, you could match them from another source/part #, if needed.
Sooner think you can cross-reference the same/similar bolt from Kubota....Many (not all) smaller Kubota snowblowers are made by Rad Tech in Canada. Betting shears are same/similar.
Doubt yours look terribly different from mine.....