[gabsgrammy54]

I have a cub cadet riding lawn mower with a Kohler courage engine; Engine model number: SV590S and the spec number is: SV590-0220. Carb was leaking so I got a carburetor kit and installed it. Upon starting the mower it was running really erratically; high and low idling and very noisy. I’m trying to adjust the idle screws but the mower now won’t start unless I use starting fluid and it’s hard to keep it running to be able to adjust the screws. I looked at the service manual online and on one page it mentions something about a “governed idle speed adjustment (if equipped).” Does this engine have that? It also mentions the “low idle speed (RPM) adjustment”. Is this the adjustment I use? Do I need a tachometer make this adjustment or to read the RPM’s?