No, the end where the propeller attaches to the motor block. Remove the bushing that attaches to the motor block shaft and then on the propeller there is a rubber grommet that buffers the bushings to the propeller itself. If you remove that grommet, you will see the exposed propeller hole. It is supposed to have the shape of the bushing but if it is stripped, it may have become rounded. It means that the bushing is spinning with the motor but the propeller is stripped and that's why it is not spinning with it.