[Rmowl]

Picked up a nice 1863 couple weeks ago. It started and ran fine. Mowed couple times with it, noticed a loss of power then it would pick back up, like a dirty fuel system/carburetor. Replaced spark plugs, air filter, fuel filter, changed oil and filter. Cleaned out carb bowl, blew out the passages. Ran great. Tried just today and engine decreased in power. Limped back to the garage and took carb off, didn’t appear dirty inside. Put back on and now it will just crank and no start. Has 840 hrs. I just assumed it’s a fuel issue, but just guessing, don’t have any experience with the command engines. Not sure where to go from here, thanks for any help