Ferris 61 procut S electric clutch feeler guage set

Hello anyone. I have a Ferris commercial Procut S 61. It chewed up a hydro drive belt, replaced it. I do not have any books on this mower being old and second to third hand but seems to run beautiful or did. Model H2222K, Serial 6976, Engine Kohler Command 22. The electric clutch part number is 1521145 and at the moment set it at .015 with a feeler gauge. Hopefully between .015 to .024. Clutch spins with very little drag and will keep it there for now but asking anyone if they know the true setting of the clutch with a feeler gauge.

https://www.ferrismowers.com/na/en_...ts.productmanuals.html?searchrequested=H2222K
Manual