A trowel assembly for finishing a surface includes a housing that defines a compartment. A rod is coupled with the housing and extends away from the housing for being handled by a user to control the trowel assembly. A rotor is rotatably coupled to the hou...

A control module for a walk behind trowel configured to detect and to prevent an uncontrolled or undesirable motion of the trowel. The trowel includes an engine configured to drive rotation of a rotor. The control module includes a gyroscope and a controll...

A starter module configured to limit an engine speed of an engine for a walk behind trowel at time of startup. The walk behind trowel includes a rotor driven by the engine, a throttle to command an operating state of the walk behind trowel, and a clutch op...