A motorized working apparatus includes a housing having an air inlet, an air guide leading from the air inlet into the housing, and an air filter which is curved hood-shaped outwardly and covers the air inlet of the housing. The air filter includes a filter frame body with a filter-fabric-free air outlet face facing the air inlet of the housing and with a window frame structure protruding over the filter-fabric-free air outlet face and having at least one window region. A filter fabric occupies the at least one window region, and a fixation releasably fixes the filter frame body to the housing. The window frame structure has frame webs which delimit the at least one window region and which protrude relative to the filter fabric towards an air supply side in the at least one window region and include web side edges which run sloping at an obtuse angle relative to adjacent window planes, and/or the fixation includes a pre-fixing clamping holding arrangement and a final fixing holding arrangement which are independent of each other, and/or the window frame structure of the air filter protrudes over the filter-fabric-free air outlet face in the shape of a roof with a triangular cross-sectional form.

A throttle control mechanism for a surfacing machine, the control mechanism comprising a control member (310) arranged movable (M, D) in a support structure (320), wherein the control member (310) is arranged to be tensely attached to a throttle actuator (330) of the surfacing machine via a tensile engagement member (340), wherein the control member (310) is arranged to be held fixed in the support structure in at least a first throttle position (350), where the control member is arranged biased towards an idle throttle position (370) when released from the first throttle position (350), and wherein the first throttle position (350) and the idle throttle position (370) are configurable to provide an engine speed margin with respect to a clutch engagement engine speed range of the surfacing machine.

A throttle control mechanism for a surfacing machine, the control mechanism comprising a control member (310) arranged movable (M, D) in a support structure (320), wherein the control member (310) is arranged to be tensely attached to a throttle actuator (330) of the surfacing machine via a tensile engagement member (340), wherein the control member (310) is arranged to be held fixed in the support structure in at least a first throttle position (350), where the control member is arranged biased towards an idle throttle position (370) when released from the first throttle position (350), and wherein the first throttle position (350) and the idle throttle position (370) are configurable to provide an engine speed margin with respect to a clutch engagement engine speed range of the surfacing machine.

Various embodiments of the present disclosure provide a combustion-powered fastener-driving tool including multiple combustion chambers and an exhaust gas recirculation system.

Various embodiments of the present disclosure provide a combustion-powered fastener-driving tool including multiple combustion chambers and an exhaust gas recirculation system.

To enhance responsivity of temperature sensor detecting an engine temperature. A temperature sensor component 40 includes a metal washer 42. The temperature sensor component 40 transfers the engine temperature to a sensor body 46 via the heat transfer washer 42. A cylinder portion 8 of a cylinder block 64 has two bosses 30. The washer 42 of the temperature sensor component 40 is fixed to the boss 30 together with the electronic control unit 20.

To enhance responsivity of temperature sensor detecting an engine temperature. A temperature sensor component 40 includes a metal washer 42. The temperature sensor component 40 transfers the engine temperature to a sensor body 46 via the heat transfer washer 42. A cylinder portion 8 of a cylinder block 64 has two bosses 30. The washer 42 of the temperature sensor component 40 is fixed to the boss 30 together with the electronic control unit 20.

Disclosed is a method, apparatus and kit for starting a quick-start chainsaw. The quick-start chainsaw comprises a chainsaw having a crankshaft extending along an axis between first and second ends and a quick-start extension extending along the axis from the second end adapted to engage with and be rotated by a socket. The quick-start chainsaw further comprises a casing with a hole therethrough aligned with the axis providing access to the quick-start extension therethrough. The method comprises securing the socket to a portable drill, locating the socket within the hole and connecting the socket with the quick-start extension. The method further comprises rotating the socket and the quick-start extension around the axis with the portable drill thereby rotating the crankshaft and starting a combustion engine. The kit comprises a quick-start chainsaw and a socket rotatable by a portable drill.

Disclosed is a method, apparatus and kit for starting a quick-start chainsaw. The quick-start chainsaw comprises a chainsaw having a crankshaft extending along an axis between first and second ends and a quick-start extension extending along the axis from the second end adapted to engage with and be rotated by a socket. The quick-start chainsaw further comprises a casing with a hole therethrough aligned with the axis providing access to the quick-start extension therethrough. The method comprises securing the socket to a portable drill, locating the socket within the hole and connecting the socket with the quick-start extension. The method further comprises rotating the socket and the quick-start extension around the axis with the portable drill thereby rotating the crankshaft and starting a combustion engine. The kit comprises a quick-start chainsaw and a socket rotatable by a portable drill.

An engine including an engine block having a cylinder defining a front of the engine, a blower housing coupled to the engine block and defining a hot half positioned adjacent the front of the engine and a cool half opposite the hot half, and an electric starter system positioned within the blower housing. The electric starting system includes a starter mount assembly coupled to the blower housing, an electric starter motor retained by the starter mount assembly and positioned in the cool half, and a battery mounted to the blower housing and positioned in the cool half. The battery is electrically coupled to the electric starter motor.