The present invention relates to a power tool with a chain wheel cover. The power tool is provided with a guide rail (9). A drive motor (11) drives a saw chain (10) at the guide rail (9) in a surrounding manner. The driving is realized through a sprocket (22) which is configured in a sprocket compartment (44). The saw chain is turned at a first deflection area of the sprocket (22). In the stationary saw chain (10), the peripheral wall (40) of the sprocket compartment (44) and the roof (31) of the saw chain (10) are disposed at a spacing relative to each other is less than approximately 18 mm at least across 50% of a stretch from the first deflection area (26) to the exit opening (47) and across an entire saw chain width.