A shutter assembly for a lawnmower includes a steel cutter housing, a shutter, and a lever. The cutter housing can include a cutter housing slot passing through the cutter housing. The shutter can be rotatably attached to the cutter housing so as to be movable between: a first shutter position in which a blocking panel of the shutter is positioned such that the blocking panel opens the discharge opening; and a second shutter position in which the blocking panel is positioned such that the blocking panel closes the discharge opening, and the second shutter position corresponds to a mulching position. The lever can be attached to the shutter and can extend through the cutter housing slot. The cutter housing slot can be configured to limit movement of the lever such that a range of motion of the blocking panel extends from the first shutter position to the second shutter position.

A discharge shroud device includes a cover element extending outward from a side of a mower deck for covering a discharge opening defined at the side of the mower deck, a shroud support unit for attaching the cover element to the mower deck, a blocking plate provided in the cover element to be swingable between an open position in which the discharge opening is opened and a closed position in which the discharge opening is closed, and an open-position fixing element for fixing the blocking plate to the cover element at the open position.

A lawn mower contains: a work unit including a housing having a downward-facing opening and a cutter blade rotatably provided in the housing such that when rotated, the cutter blade cuts grass and generates a transport air flow flowing from the opening of the housing to inside; a grass clippings receptacle configured to receive grass clippings cut by the work unit; a grass clippings transport passage connecting an interior of the housing with the grass clippings receptacle; a shutter device including a shutter configured to selectively open and close the grass clippings transport passage and an actuator configured to drive the shutter; a controller configured to control the shutter device; and a pressure sensor provided in the grass clippings transport passage to detect a pressure in the grass clippings transport passage, wherein the controller is configured to control the shutter device in accordance with the pressure detected by the pressure sensor.

A convertible lawnmower is provided. The lawnmower includes a housing and a mulching system. The housing includes a discharge opening. The mulching system includes a mounting ring and a shutter ring. The mounting ring is coupled substantially concentrically to the housing and includes an upper surface, a lower surface, and a sidewall that extends substantially axially therebetween. The sidewall is formed with a platform track and at least one installation tab. The platform track extends at least partially circumferentially along an inner surface of the sidewall and each installation tab extends axially from the lower surface. The shutter ring is coupled to the mounting ring via the platform track such that the shutter ring is selectively shiftable between a mulching mode and a discharge mode.

A convertible lawnmower is provided. The lawnmower includes a housing and a mulching system. The housing includes a discharge opening. The mulching system includes a mounting ring and a shutter ring. The mounting ring is coupled substantially concentrically to the housing and includes an upper surface, a lower surface, and a sidewall that extends substantially axially therebetween. The sidewall is formed with a retaining groove and at least one installation groove. The retaining groove extends at least partially circumferentially within an inner surface of the sidewall and each installation groove extends axially from the lower surface to the retaining groove. The shutter ring is only coupled to mounting ring via the retaining groove such that the shutter ring is selectively shiftable between a mulching mode and a discharge mode.

A multi-blade lawnmower includes a cutting deck with generally adjacent cutting chambers. The cutting chambers each include a cutting blade. The cutting chambers have at least one of the following: (a) a side discharge opening and (b) a rear discharge opening. Each side discharge opening either communicates with the next cutting chamber or, as in the case of the last cutting chamber, discharges grass from side of the cutting deck. When a side discharge opening is present, a side discharge baffle plate is available for either blocking the side discharge opening or being stored in a non-blocking inactive position inside the cutting deck. When a rear discharge opening is present, a rear discharge baffle plate is available for either blocking the rear discharge opening or being stored within the cutting deck in non-blocking inactive position inside the cutting chamber.

In certain example embodiments of this invention, the lawn mower includes one or more of: (a) cutter deck baffle teeth for improving cutting performance; (b) a trim divider edge portion of the cutter deck for improving cutting performance; (c) a trim vacuum structure portion of the cutter deck for improving cutting performance; and/or (d) a center vacuum structure portion of the cutter deck for improving cutting performance.

Uneven distribution of grass clippings in a grass clippings receptacle of a lawn mower can be minimized. A lawn mower includes: a work unit including a housing having a downward-facing opening and a cutter blade rotatably provided in the housing such that the cutter blade cuts grass and generates a transport air flow flowing from the opening of the housing to inside; a grass clippings receptacle configured to receive mowed grass clippings; a grass clippings transport passage connecting an interior of the housing with the grass clippings receptacle; a shutter device including a shutter configured to open and close the grass clippings transport passage and an actuator configured to open/close-drive the shutter; a controller configured to control the shutter device; and a speed sensor for detecting a travel speed of the lawn mower, wherein the controller is configured to open/dose-control the shutter device based on the travel speed.

A mower deck is disclosed. The mower deck includes a housing having a top wall, at least one blade rotated downwardly of the top wall and about a vertical shaft, and a blade baffle unit extending downwards from the top wall in such a manner as to surround an outer circumferential area of a rotational path of the blade to create therein a mulching blade rotation space, the blade baffle unit having a front baffle located on an advancing side of the traveling vehicle and a rear baffle located on a reversing side of the traveling vehicle. The front baffle extends downwards from the top wall to exceed the rotational path so as to prevent discharge of cut grass pieces via a lower end of the front baffle. The rear baffle extends downwards from the top wall by such an extent to allow discharge of the cut grass pieces.

A discharge accessory for a lawnmower includes an inlet end and a hook disposed at the inlet end. The hook defines a channel. A lever arm extends from the hook in a direction transverse to the channel, and a protrusion is disposed in the channel. The protrusion extends in a first direction transverse to the channel and to the lever arm, and the protrusion extends in a second direction transverse to the channel.