Portable handheld machine saw having pre-scoring assembly and tool change

A mobile handheld machine saw having a saw assembly, which has a saw toolholder for a saw tool, and a saw drive motor for driving the saw toolholder, and having a guide device, which has a guide body having a guide surface extending along a longitudinal axis for guiding the handheld machine saw along a working direction on a workpiece or a guide rail, wherein a saw cut can be introduced along the working direction into the workpiece by means of the saw tool protruding below the guide surface in sawing operation of the handheld machine tool, and wherein the handheld machine saw has a securing device for securing the saw toolholder for a tool change of the saw tool, wherein the securing device prevents the driving of the saw toolholder by the saw drive motor in a securing position and releases the saw toolholder in a saw operating position and wherein the handheld machine saw has a scoring assembly, which is arranged in front of the saw assembly on the guide device with respect to the working direction, having a scorer toolholder for a scoring tool, and having a scorer drive for driving the scorer toolholder, wherein a score upstream from the saw cut to be introduced in the working direction can be introduced into the workpiece by means of the scoring tool protruding below the guide surface in scorer operation of the handheld machine tool, and wherein the securing device prevents the driving of the scorer toolholder by the scoring drive in the securing position and releases the scorer toolholder in the saw operating position, and

• wherein the saw toolholder is movably mounted on or with respect to the guide device by means of a saw depth setting bearing, and wherein the scorer toolholder is movably mounted on or with respect to the guide device by means of a scorer depth setting bearing, which is separate from the saw depth setting bearing, between at least one active position, in which the scoring tool arranged on the scorer toolholder protrudes from the guide surface, and an inactive position, in which the scoring tool is adjusted behind the guide surface, and wherein the securing device is designed to actuate the scorer toolholder in a tool change position, in which the toolholder is freely accessible for the tool change of the scoring tool.