Snow Thrower or Blower Snowblowers range from self-propelled to units mounted on tractors. They come in varying sizes, but usually are designed with similar mechanisms. Larger snowblowers operate in two stages. First, the spiral-shaped auger blades bite the snow and pull it into a chamber. Next, a rotary impeller propels the snow out a discharge chute.
Smaller units operate in a single stage that collects snow in a fast-moving auger and throws it.
Whirling paddles, augers and blades have tremendous power. The manual can help you understand how the machine works and how to operate it safely. Figure 2 shows common danger areas on a snowblower. Never allow children to operate the machine, and make sure adults who operate the snowblower have proper instruction. Coming in contact with the turning blades inside the discharge chute is the most common cause of injuries associated with snowblowers.