Tim, on your engine, it looks like the pto end of the crank is longer than the M18's used in the Cub Cadet 18xx series. Probably not that big of an issue if a spacer is used.
Here is the Kohler crank reference manual. Look on page 3.9.
https://www.wheelhorseforum.com/file...oogle_vignette
The Cub Cadet version uses 52-014-66-S
The Snapper uses 52-014-63-S