You have not posted pictures of your SB45. There are several things that might be wrong with it in addition to the possibility of wear/damage to the engine-side clutch half. I suggest you post a series of pictures including showing the engine mounting area, the cylinder reel, and the chains & sprockets inside the chain case on the left side of the mower. Deejay, our reel mower guy and the star of the Outdoorking videos on repairing SB45s, can then discuss it with you.
Many thanks for the advice, grumpy. I shall take and post the photos sometime this evening after work. Cheers, Hien.
