Single step starting system

摘要

A hand-held power tool may include a housing, a power unit disposed within the housing and configured to operate at least in part in response to actuation of a trigger, a working assembly powered responsive to operation of the power unit, and an activation lever having an integrated lockout member. The activation lever may selectively engage a first fuel enrichment mode associated with startup of the power unit in a first range of ambient temperatures and a second fuel enrichment mode associated with startup of the power unit in a second range of ambient temperatures based on a position of the activation lever. Selective engagement of the first fuel enrichment mode or the second fuel enrichment mode may be enabled responsive to actuation of at least the lockout member and positioning of the activation lever.

主权项

1. A hand-held power tool comprising:
a housing; a power unit disposed within the housing, the power unit being configured to operate at least in part in response to actuation of a trigger; a working assembly powered responsive to operation of the power unit, wherein the power unit is an internal combustion engine characterized in that an activation lever having an integrated lockout member is manually operated to selectively engage a first fuel enrichment mode associated with startup of the internal combustion engine in a first range of ambient temperatures and a second fuel enrichment mode associated with startup of the internal combustion engine in a second range of ambient temperatures based on a position of the activation lever, wherein the first and second fuel enrichment modes each correspond to respective different positions of a choke value of a carburetor, wherein selective engagement of the first fuel enrichment mode or the second fuel enrichment mode is enabled responsive to actuation of at least the lockout member and positioning of the activation lever, wherein the choke valve is positioned via rotation of a choke shaft, and wherein the choke shaft is operable in a direction opposite the direction of rotation of the activation lever in response to positioning of the activation lever, and wherein a geared coupler is provided to offset an axis of rotation of the choke shaft from an axis of rotation of the activation lever such that the activation lever substantially overlaps with an edge portion of the housing.