Gasoline saws are generally composed of an engine, a transmission mechanism, and a sawing mechanism. During operation, the power drives the saw chain through the traditional mechanism, so that the saw chain moves continuously along the guide plate to saw wood.





Engine: Generally, it is a single-cylinder air-cooled two-stroke high-speed gasoline engine. In order to adapt to the operation of the chain saw in different cutting directions and different positions, a pump-diaphragm carburetor with an oil delivery pump is used, and the pressure pulsation in the crankcase is used to drive the diaphragm pump oil, so that the engine can supply oil normally at any position. . In addition, new structures such as transistor non-contact magneto ignition system and one-way valve intake system are increasingly used, thereby improving the performance of the engine.

Transmission mechanism: including centrifugal friction clutch and reducer. The reducer generally adopts a conical wheel reducer, which is convenient for the horizontal and vertical adjustment of the sawing mechanism relative to the body to meet the needs of different sawing directions during logging and lumber making.

Saw wood mechanism: It is the working part of the chain saw, including the drive sprocket, saw chain, guide plate, saw chain tensioner and wood insert teeth.

For gasoline saws, the future development trend will be to adopt new materials, new processes, and new structures to further reduce the weight of chainsaws; reduce noise and vibration, reduce air pollution to improve operating conditions; add safety protection devices to improve usage reliability and safety, while continuing to perfect the new rotary-engine-powered chainsaws and remotes.