Kickback is a leading cause of power saw injuries. A hazard inherent to all power saws regardless of brand or style, it occurs when the material binds or pinches the saw blade during a cut. In a split second, kickback can jerk the saw out of a user's hands or shoot the piece of wood he's cutting back toward him.
Smooth auger blades aren’t designed to cut through packed or icy snow so the snow may be harder to clear if your snowthrower has this type of blade. Snowthrowers with serrated auger blades cut easily into icy snow. Track drive also helps the machine grip the surface and push into the icy snow.