This what the linkage looks like on my Troy-Bilt Econo-Horse. It has the six horse Tecumseh motor but it doesn't have the electric start not sure they are the same.
Hope it helps.

Here is a link that might be useful: linkage

Thanks so much for the pictures. Is there a spring behind the arm that the two rods connect to?
Jim

Jim
Yes, there is a spring in back of the arm plate . It hooks in the notch under the link that runs from the arm to the carburetor. I added 4 more pictures on the next page of the site that show it a little better.
Good luck.

Thanks for the fine pictures. I have too many parts and not the right ones. I at least know where it all goes.
Jim