Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

This is a new 88835, used about 4 times and I was recently clearing snow off my back patio that has 2 x 2 slate stonework.  The machine hit an edge on one of the stones and it chewed it up, taking about 1/4 of the stone.  Following that, when engaging the auger and impeller there a relatively loud banging noise.  The shear pins are intact, so I'm looking for ideas on what is causing the noise.  Bent auger blades or something else?  Thanks.

No, I haven't tried that yet, but will give it a try tonight.  Big storm heading my way, so hopefully I get it sorted. 

Wanted to post that I found the problem.  The stone bent one of the auger blades and I was able to bend it back by hand.  The noise is gone.  Will keep an eye on throughout the rest of the season and may replace that blade if necessary.