Abstract: A chain saw includes a body in which an engine for driving a saw chain is laterally housed; a top handle provided above the body; and a muffler arranged below the engine, in which an exhaust outlet for discharging exhaust from the front side of the body to the outside opens forward from the front side of the body. Accordingly, not only the exhaust can be discharged forward from the front side of the body, but also the exhaust sound can be propagated forward so that less exhaust sound is heard by the operator, thereby improving the work environment.

Abstract: An oil tank (431) for storing oil for lubricating a saw chain (21) and a fuel tank (443) for storing fuel for an engine (5) are integrally formed with a top handle (41) provided on an upper side of a body (3). The body (3) and the top handle (41) are connected by a connecting spring such that vibration transmission from the body (3) to the top handle (41) is restrained. In other words, since the heavy oil tank (431) and the weighty fuel tank (443) are integrally formed with the top handle (41) to trim the weight of the body (3) that generates vibration, vibration transmitted to the top handle (41) is decreased to improve the vibration insulation of a chain saw (1).

Abstract: A chain saw includes a body in which an engine for driving a saw chain is laterally housed; a top handle provided above the body; and a muffler arranged below the engine, in which an exhaust outlet for discharging exhaust from the body side to the outside opens forward from the body side. Accordingly, not only the exhaust can be discharged forward from the side of the body, but also the exhaust sound can be propagated forward so that less exhaust sound is heard by the operator, thereby improving the work environment.

Abstract: A chain saw has a body in which a stratified scavenging 2-cycle engine for driving a saw chain is laterally housed and a top handle provided above the body. In other words, by laterally disposing the engine, an air port can be installed upward to a cylinder, and an air quantity adjusting device for feeding scavenging air to the air port and the carburetor can be well housed in the top handle. Accordingly, there is no need to separately prepare a space for installing the air quantity adjusting device, so that miniaturization can be achieved.