Stuffer assembly for an agricultural baler comprising: a stuffer chute for collecting and precompressing a charge of crop material therein; a stuffer configured to transfer the charge of crop material collected within the stuffer chute into a baling chamber of the agricultural baler, wherein the stuffer comprises a stuffer arm having a first end and a second end opposite the first end, wherein a tine bar is mounted on the second end of the stuffer arm; a drive mechanism for driving the stuffer, wherein the drive mechanism comprises an input shaft connectable to a power source, an output shaft coupled to the first end of the stuffer arm, and a clutch assembly for selectively coupling the input shaft to the output shaft; wherein the clutch assembly comprises: a first rotary element and a second rotary element, wherein one of the first rotary element and the second rotary element is provided on the input shaft and the other one of the first rotary element and the second rotary element is provided on the output shaft; a plurality of engagement elements, wherein each engagement element of the plurality of engagement elements is configured to selectively engage with both of the first and second rotary elements (72, 74); and an electronically controllable actuator configured to engage and/or disengage the plurality of engagement elements with both of the first and second rotary elements (72, 74). a stuffer chute for collecting and precompressing a charge of crop material therein; a stuffer configured to transfer the charge of crop material collected within the stuffer chute into a baling chamber of the agricultural baler, wherein the stuffer comprises a stuffer arm having a first end and a second end opposite the first end, wherein a tine bar is mounted on the second end of the stuffer arm; a drive mechanism for driving the stuffer, wherein the drive mechanism comprises an input shaft connectable to a power source, an output shaft coupled to the first end of the stuffer arm, and a clutch assembly for selectively coupling the input shaft to the output shaft; wherein the clutch assembly comprises: a first rotary element and a second rotary element, wherein one of the first rotary element and the second rotary element is provided on the input shaft and the other one of the first rotary element and the second rotary element is provided on the output shaft; a plurality of engagement elements, wherein each engagement element of the plurality of engagement elements is configured to selectively engage with both of the first and second rotary elements (72, 74); and an electronically controllable actuator configured to engage and/or disengage the plurality of engagement elements with both of the first and second rotary elements (72, 74). a first rotary element and a second rotary element, wherein one of the first rotary element and the second rotary element is provided on the input shaft and the other one of the first rotary element and the second rotary element is provided on the output shaft; a plurality of engagement elements, wherein each engagement element of the plurality of engagement elements is configured to selectively engage with both of the first and second rotary elements (72, 74); and an electronically controllable actuator configured to engage and/or disengage the plurality of engagement elements with both of the first and second rotary elements (72, 74).