Hi, I had the same problem last season and I found that somehow the drive belt got above the brake wire (#17 on pg. 31 of the manual). It squealed every time I engaged the auger. You can remove the oil fill access panel and see the belt and brake wire. The wire should be on the outside (above) of the belt so it is lifted away from the belt when the auger is engaged. Mine was on the inside of the belt, so when the drive lever was pulled, the brake wire pressed up against the belt and caused the squeal. You may be able to flip things back through the oil access opening, but I had already removed the side cover to find the broblem.