I have H2113HDA Honda lawn tractor that keeps dying when I am mowing. It is very intermittent - it may let me get half done, or it may die every couple of minutes. Usually it will start right up again, sometimes I have to let it sit quite a while before it will start. It has been doing this for a few years, and keeps getting worse. I did pull the plug once when it would not fire up again and by grounding the plug to the block I saw it had no fire. I originally thought the dying was a fuel problem, and have replaced the filter, even replaced the carburetor but problem persisted. So now after buying a carburetor, I figure it must be an electrical problem. I figure it is either the ignition coil or a bad ground. Can anyone tell me where all of the grounds are at on this model so I can check them? Also if I replace the ignition coil (the one on the outside of the flywheel), what spacing do I need to leave between the flywheel and the ignition coil itself? I will be using a feeler gauge to set this. If I am going down the wrong path does anyone else have any advise? Also, I see there are two other coil assemblies which are UNDER the flywheel, but am assuming these are serving some other purpose than ignition, so should not be the problem. By the way, this is a 1999 model, and I would like to keep it running for another 15 or 20 years if I can. Thank you.