Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I'm new to this site and first time posting here so hello to all.

I have an 18 year old Tecumseh HM-100 10HP flat head engine that powers my 5000 watt self regulating portable generator. According to the manual the no load RPMs should be set to 3600 RPMs, I am assuming this is to give the correct 120 volt 60 Hz output. However when the generator is loaded to about half it's rated watts the engine RPM's drop along with the voltage and Hz. If I adjust the governor increasing the RPMs to give me approxitmatly 120 volts @ 60Hz when loaded I get around 3700 RPM when the load is removed.

So my question is this, will running the engine at 3700 PRM's with no load do any harm to the engine.  Any information would be appreciated.

Bill