I put it all back together after I cleaned the carburetor, gas tank, and the engine itself. About 30 years of build up on it so it needed cleaning pretty bad. Just for laughs I added some oil and about half a tank of gas and tried to start it. I pulled quite a few times and it wouldn't start so I pulled the plug and it seemed wet. I held the choke valve open and it started up. Ran rough for a minute then smoothed out, but the RPM's seem to low. I pulled on the governor link, and governor spring, and the RPM's picked up and ran smooth.
It seems like the governor spring does not pull the governor into the correct position to allow the engine to rev up to top RPM. Do these springs lose tension over the years? Is there a way to adjust it? Or will it pick up RPM's under load when mowing?