I like everybody else had problems with the stock carb so i bought a weber carb off somebody that had it already on a generac. My problem is i use to be able to hit between 4000-4200 rpms now cant get above 3800 could the carb be to small or anything else that could cause this?
Thanks

3800 is about right for the Generac. Might have leaky valves.

It seems to be running fine so i figured the jetting was fine. The one i got needed cleaned so i priced rebuild kits and new ones and they wasnt much difference in price so i bought a new one no difference in rpm between the two. Its a 32 mm carb not sure what is factory. It has had somr head work done to it before i bought it. I do believe i have lost speed since my rpms dropped below 4000