Moottorisaha

Moottorisaha is the Finnish word for chainsaw. A chainsaw is a portable, mechanical saw that is held with two hands and powered by a motor, typically an internal combustion engine or an electric motor. It consists of a set of teeth, attached to a rotating chain, that cuts into wood. Chainsaws are used for activities such as tree felling, limbing, bucking, pruning, cutting firewood, and clearing brush.

The first gasoline-powered chainsaw was invented by Andreas Stihl in 1926. Early models were heavy and cumbersome, but technological advancements have led to lighter, more powerful, and safer designs. Modern chainsaws are equipped with various safety features, including chain brakes, anti-vibration systems, and automatic chain lubrication.

Chainsaws are powered by either gasoline engines or electric motors. Gasoline-powered chainsaws are more common for professional use due to their power and portability, especially in remote locations. Electric chainsaws, both corded and battery-powered, are often used for lighter tasks and in areas where noise and emissions are a concern.

The cutting mechanism of a chainsaw is a chain that moves at high speed around a guide bar. The chain has sharp cutting teeth on its outer edge. As the chain rotates, the teeth cut through the wood. The speed of the chain and the design of the teeth determine the cutting efficiency.

Chainsaws require regular maintenance, including sharpening the chain, cleaning the air filter, and checking the fuel-oil mixture for gasoline engines. Proper safety equipment, such as eye protection, hearing protection, gloves, and chainsaw chaps, is essential when operating a chainsaw to prevent injuries.