HS40 Overheating???

#1
My HS40 starts very well and runs well, but when I shut it off even after just a few minutes it is impossible to restart. Once it cools down it starts up again just fine. What the...???? One expert I spoke with advised a cooler plug and that might help, but just wanted to check if anyone else had seen this sort of problem and knew of any other fix. Coil??? Carburetor???
 
#2
Check sealing of your gaskets between intake and engine and carb and intake--and be sure you're getting gas to the carb--check venting of tank, too. You may be getting what we old school Ford guys hated: vapor lock! Just dealt with this on an engine. I'm assuming the engine revs full range and doesn't sputter at full throttle: if so, check your float setting, too.

If all that is fine, then pop the coil and go to a small engine shop and get it tested. I've gotten in the habit of replacing coils on all of my rebuilds though probably not necessary but I just want to eliminate a future problem. Points ignitions are a different story...and I'll defer to experts.
 
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