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I hope someone can point me in the right direction. I have a 900 Intek series 205cc (122012 0 140 B8) motor that I believe has broken the crank inside the case. It did not have a catastrophic failure; it was running fine. I shut it off and went to start it, and there was a clunking noise when I pulled to start it. I have not pulled it apart yet, but the output can be held in place when pulling on the cord, and the shaft has visible up-and-down play.
My options;
If it is not damaged inside I could replace the crank, it has about one inch of 7/8 diameter and then tapers up to 1 inch (pic attached). The tapered ones I have found online have threads where it is 7/8, does anyone know what the part number for my crank is?

Agrifab has a replacement motor for about $500 shipped but do not want to spend that much on something that gets 10 hours of use per year. I have had no luck finding a used one online or another brand that will work (assuming others have this output design).

I have an unused Honda clone with a 1-inch straight shaft, Agrifab said all their impellers are tapered, I found several other brands that are keyed, but also cost several hundred dollars. If I can find a capable shop I have considered having my impeller machined out and fitted with a key slot.

I have seen Predator motors on Agrifab vacs but do not know how they did it, I do not believe any of these motors have a tapered shaft (is there an adapter?)

Looking for recommendations as my knowledge of small engines is minimal, thanks for looking.

Replacement crankshaft is 797076 which is currently on the Briggs distributor backorder list. The shortblock and replacement engine have been discontinued. Funny thing is I just dealt with trying to find a replacement engine for another independent dealer for this exact engine about 2 weeks ago.