Yes, it's a K321. No smoke. New coil and condenser. Can't find the damnd points but have them. Plug is a little black. Replaced the air filter too. Put some "Seafoam" in tank. Runs great at 1/2 throttle but that won't cut the grass. As I increase the throttle, it begins to miss and gets so bad that I have to back off the throttle. If I push the throttle all the way up, it will run extremely rough then cycles to smooth running and back to rough.Any smoke?
Check the plug and see what it looks like. It may be running rich or lean, burning oil, weak ignition, improper ignition timing, etc.
Oh, and CHECK THE POINTS!
I'm guessing this is most likely a K321.
Thanks to you all for the help. You guys really ROCK!!! I would have never ever figured this out without your patient help. I just have little to no experience with small engines.You can't get any better than the picture that Restrorob posted on your old thread. The last think you said on the old thread was that you were going to find and replace the points and blow out the carb. Why post a new thread with the same problems without doing what you said? You can download a service manual off of the Kohler site if you need one.
It turned out to be the points. Once I found them, now it runs up to high RPM and purrs like a kitty.