TroyBilt Junior Rototiller will not rev up

Hi guys- I have an old Troybilt Junior Rototiller that dates back probably to the 1980's. It is equipped with a Tecumseh 3.5 horse motor that used to be bulletproof, but now I cannot seem to get this thing to rev up. It idles fine but as soon as I give it gas it sputters and dies. I have tried adjusting the governor, but that did nothing so then I replaced the carburetor- same thing. I would really like to get this thing running again. If anybody has any suggestions I'm all ears. Thanks

Attached Images

• TB Tiller front.JPG (211.3 KB)
• Troy-Bilt Junior Tiller.JPG (123.4 KB)

TroyBilt Junior Rototiller will not rev up