Protect Your Husqvarna Snow Blower or Tiller using Genuine Husqvarna Parts & Accessories. A shear pin (sometimes called a shear bolt) in a snow blower connects the auger to the shaft. It is designed to break away in case foreign objects come in contact with the moving parts. So you might as well keep a supply of shear pins on hand throughout the winter because sooner or later you will need to replace one. Of course, you can always fall back on the alternative, a shovel.
