Planetary gear transmission having a sun gear, a ring gear and at least one first planet gear or at least one second planet gear, wherein: - the first planet gear and the second planet gear are arranged on a planet carrier and - the sun gear, the ring gear, the first planet gear and the second planet gear mesh with one another, wherein the planet carrier has a first planet carrier part and a second planet carrier part, wherein the first planet carrier part and the second planet carrier part are configured in such a way that, starting from a basic position, they are rotated relative to each other and can be secured in their situation relative to each other in a rotated position, and in that the at least one planet gear is connected to the first planet carrier part, and the at least one second planet gear is connected to the second planet carrier part and wherein the first planet carrier part is formed by two externally situated disks (10, 11) and the second planet carrier part is arranged essentially between the two externally situated disks (10, 11), characterized in that the two externally situated disks (10, 11) of the first planet carrier part are connected to each other by means of at least one setting screw, such that when the at least one setting screw is fixed, this ensures a securing or fixing of a position of the first planet carrier part and the second planet carrier part relative to each other, while when the at least one setting screw is loosened, a rotation of the first planet carrier part and of the second planet carrier part and thus an adjustment of the at least one first planet gear and of the at least one second planet gear, and a setting of a tooth flank clearance is possible. - the first planet gear and the second planet gear are arranged on a planet carrier and - the sun gear, the ring gear, the first planet gear and the second planet gear mesh with one another, wherein the planet carrier has a first planet carrier part and a second planet carrier part, wherein the first planet carrier part and the second planet carrier part are configured in such a way that, starting from a basic position, they are rotated relative to each other and can be secured in their situation relative to each other in a rotated position, and in that the at least one planet gear is connected to the first planet carrier part, and the at least one second planet gear is connected to the second planet carrier part and wherein the first planet carrier part is formed by two externally situated disks (10, 11) and the second planet carrier part is arranged essentially between the two externally situated disks (10, 11), characterized in that the two externally situated disks (10, 11) of the first planet carrier part are connected to each other by means of at least one setting screw, such that when the at least one setting screw is fixed, this ensures a securing or fixing of a position of the first planet carrier part and the second planet carrier part relative to each other, while when the at least one setting screw is loosened, a rotation of the first planet carrier part and of the second planet carrier part and thus an adjustment of the at least one first planet gear and of the at least one second planet gear, and a setting of a tooth flank clearance is possible.