Sprocket goes on one way
I just swapped out an all steel 16 tooth sprocket on my '13 650 with a brand new rubber cushioned one. When I tried to put the new sprocket on the transmission shaft, it would not fit, so I took the chain off and played around with the new sprocket. There were no visible burrs in the broached hole nor could I feel any, but the sprocket would only fit on the shaft with the raised part number on the rubber facing inward*. Then it slipped on with no appreciable play, so that's the way I installed it. When I tightened the nut down, it pushed the sprocket farther onto the shaft than I had with my fingers. No doubt this will loosen up a bit as the miles accumulate.
Has anyone else encountered a sprocket that only fit on the shaft one way?
*My instinct was to install the sprocket with the numbers readable once the cover was removed for future replacement, but this time I recorded the part number in my Maint. Log. And yes, I torqued the nut to 83 ft lbs and used a new lock washer bent against the nut's flat.