Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Transmission for GX75, shows to be manual transmission, so it will not replace the hydrostat! See link below.
I see question is still open. Did you see y response? It will not interchange!