Thanks for the advice.
I believe I have the 782 fixed. The problem is a little embarrassing but here is the story. Several weeks ago, I noticed the 4 screws that mounts the air filter to the carb elbow were missing. I removed the carb and checked it for the screws. I figured I had removed them and lost them as I was working on the throttle. I also ran a magnet through the intake manifold as a caution. Today, I removed the heads and found 2 screws in the right valve and two screws in the left valve. Evidently the 4 screws traveled through the carb and intake manifold into the valves. I removed the screws and replaced the heads and tested. I have compression and the motor sounds good. I still need to finish installing the panels.
Thanks for the advice. Y'all gave me confidence to tinker and try to fix the motor.
Next project is to find a new PTO pulley for the mower deck. Then, repair the mower deck. The pulleys appear to be frozen. The PTO deck pulley is rusted out.
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