I have a 2006 Ferris with FH721V - same problem over last two years. I adjusted valves, they were .011, so put them to .004. Seemed to help some, but not completely. Was able to start it hot twice, but not consistent. Compression shows 79 psi but spark plugs are black (new plugs 2 years ago) Mower has new OEM carb (thought that was issue). Still seems to be flooding when trying to start hot. I have ordered new ignition coils - just throwing things at it now, tired of misdiagnosing. (way cheaper than new mower) I will keep at it until I get the problem fixed. Hope to report back soon with good news.
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