Well yesterday was my first time blowing snow this season, we got about 12 inches overnight, everything went fairly well but it also turned out to be my first time shearing a pin, my blower has two shear pins, one for the chain drive and one for the PTO, the one for the PTO sheared and was very easy to replace with just a pair of 1/2 inch wrenches .
But I also noticed the chain drive shear pin was loose, it takes 7/16 wrenches and didn’t have a self locking nut so I just tightened it, it’s a little difficult to get at but today I’m planning to put a self locking nut on it just like the shear pin for the PTO has and probably try adjusting the chain a little as well.
Believe I picked up some crap from using rear blade to plow from an earlier much smaller snowstorm and that’s probably what caused the pin to shear, I had never sheared a pin before.