A quick connection apparatus (2) is described for an accessory of a lawn mower (1) comprising a power take off (3) with four pulleys (31-34) which are connected in transmission by two belts (41-42), a second belt (42) being maintained taut by a second tensioner (37) which is adapted to pass from a first position to maintain the second belt (42) taut to a second position for relieving the tension on said second lever (42), said third lever (370) comprises a first extremity (371) engaged with a recall spring (47) and a second extremity (472) mounted with the support frame (20), said second extremity (375) of the third lever (370) engaging a wire (60) of a second leverages apparatus (6).
