Abstract: A guide rail for guiding a hand-held power tool (20), in particular a sawing machine (21), the hand-held power tool (20) comprising: a drive motor (23), a working tool (25), which is driven by the drive motor (23), and a protective cover (30) for the working tool, which protective cover can be moved between an open position (O) and a covering position (A), wherein a rail body (61) has, on opposite sides with respect to its center plane (MI), a resting surface (62) for laying onto a base surface and a guide surface (63) for guiding the hand-held power tool (20), on which guide surface a guide contour (50) for guiding the hand-held power tool (20) along a guide axis (F) is arranged such that the working tool (25) of the hand-held power tool (20), guided parallel to the guide axis (F), can cut into the workpiece (W) in a working direction (AR) adjacently to a longitudinal narrow side (65) of the rail body (61), and wherein the guide rail (60) has a stop assembly having at least one opening stop (81, 91) for movi

Abstract: An internal combustion engine has a carburetor and an intake channel for supplying fuel and combustion air, wherein a section of the intake channel is formed in the carburetor. At least one fuel opening is provided that opens into the intake channel within the carburetor. The intake channel has an intake opening that is connected to a clean chamber of the air filter of the internal combustion engine, wherein the internal combustion engine takes in air through at least one filter element of the air filter. A choke element is arranged in the clean chamber and moveable into a choke position and into an open position. In the open position, the choke element shields the at least one filter element.

Abstract: An internal combustion engine having an intake channel for supply of fuel and combustion air, and divided over a portion of its length into a mixture channel, and into a supply channel for supply of largely fuel-free air. A simple manufacture of the engine and a simple construction are achieved if a portion of the intake channel is guided in an elastic intake adapter, whereby the intake adapter has a partition that extends over at least a portion of the length of the intake adapter and divides the intake channel into a mixture channel and a supply channel.

Abstract: An internal combustion engine having an intake channel for supply of fuel and combustion air, and divided over a portion of its length into a mixture channel, and into a supply channel for supply of largely fuel-free air. A simple manufacture of the engine and a simple construction are achieved if a portion of the intake channel is guided in an elastic intake adapter, whereby the intake adapter has a partition that extends over at least a portion of the length of the intake adapter and divides the intake channel into a mixture channel and a supply channel.

Abstract: An internal combustion engine has a carburetor and an intake channel for supplying fuel and combustion air, wherein a section of the intake channel is formed in the carburetor. At least one fuel opening is provided that opens into the intake channel within the carburetor. The intake channel has an intake opening that is connected to a clean chamber of the air filter of the internal combustion engine, wherein the internal combustion engine takes in air through at least one filter element of the air filter. A choke element is arranged in the clean chamber and moveable into a choke position and into an open position. In the open position, the choke element shields the at least one filter element.