@scotttrainito sounds like you already have most of the common items replaced. your engines issue sounds like an ignition issue. I would check the ignition coil and set the air gap etc. to specs. Do a spark check and compression test. Clean the flywheel and coil as well. The only other thing I would do is to check the valves and set the valve clearance. Here is a quick manual for the Honda GCV145-170-200 which should essentially be the same as for your engine.
[document|30614][document|30616]
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The SM is for the GC1600 which is a horizontal shaft engine. specs should essentially be the same. [document|30646]
@scotttrainito sounds like you already have most of the common items replaced. your engines issue sounds like an ignition issue. I would check the ignition coil and set the air gap etc. to specs. Do a spark check and compression test. Clean the flywheel and coil as well. The only other thing I would do is to check the valves and set the valve clearance. Here is a quick manual for the Honda GCV145-170-200 which should essentially be the same as for your engine.
[document|30614][document|30616]