Arrangement for attaching a bar of a hand-held motor driven tool, such as a chain saw, to a body of the tool, the arrangement comprising: said body of the tool, at least one first engagement means, having a first part, securely arranged to the body, and a second part extending from the body, the second part having an engagement portion for engaging a second engagement means; a cover portion adapted to bear against the bar such that the bar is arranged between the cover portion and the body; the arrangement further comprising at least one said second engagement means, captively attached to the cover portion, wherein the second engagement means is adapted to thread engage the engagement portion of the first engagement means for securing the bar between the cover portion and the body, the second engagement means having a rotation axis; wherein the second engagement means is arranged to move in thread engagement to a position at a first distance along the engagement portion of the first engagement means, in a direction of the rotation axis of the second engagement means, wherein when the first and second engagement means are not engaged, the second engagement means is captively attached to the cover portion in such a way that it is movable to a position at a second distance relative the cover portion in a direction of the rotation axis of the second engagement means, wherein the second distance is larger than the first distance, wherein the cover portion has an inner surface that, when the cover portion is arranged to the body, is directed towards the body, and an outer surface that, when the cover portion is arranged to the body, is directed away from the body, the cover portion further having a through aperture (4c, 4g) extending between the inner and outer surfaces for receiving the second part of the first engagement means, the cover portion further comprising at least one recess in which an attaching portion of the second engagement means is arranged for captively attaching the second engagement means to the cover portion, wherein the at least one recess for captively attaching the second engagement means to the cover portion is a part of the through aperture (4c, 4g), which through aperture is arranged for receiving the first engagement means characterized in that the arrangement comprises at least two first engagement means and at least two second engagement means, each of the at least two second engagement means being arranged to cooperate with a respective one of the at least two first engagement means. said body of the tool, at least one first engagement means, having a first part, securely arranged to the body, and a second part extending from the body, the second part having an engagement portion for engaging a second engagement means; a cover portion adapted to bear against the bar such that the bar is arranged between the cover portion and the body; the arrangement further comprising at least one said second engagement means, captively attached to the cover portion, wherein the second engagement means is adapted to thread engage the engagement portion of the first engagement means for securing the bar between the cover portion and the body, the second engagement means having a rotation axis; wherein the second engagement means is arranged to move in thread engagement to a position at a first distance along the engagement portion of the first engagement means, in a direction of the rotation axis of the second engagement means, wherein when the first and second engagement means are not engaged, the second engagement means is captively attached to the cover portion in such a way that it is movable to a position at a second distance relative the cover portion in a direction of the rotation axis of the second engagement means, wherein the second distance is larger than the first distance, wherein the cover portion has an inner surface that, when the cover portion is arranged to the body, is directed towards the body, and an outer surface that, when the cover portion is arranged to the body, is directed away from the body, the cover portion further having a through aperture (4c, 4g) extending between the inner and outer surfaces for receiving the second part of the first engagement means, the cover portion further comprising at least one recess in which an attaching portion of the second engagement means is arranged for captively attaching the second engagement means to the cover portion, wherein the at least one recess for captively attaching the second engagement means to the cover portion is a part of the through aperture (4c, 4g), which through aperture is arranged for receiving the first engagement means characterized in that the arrangement comprises at least two first engagement means and at least two second engagement means, each of the at least two second engagement means being arranged to cooperate with a respective one of the at least two first engagement means.