I don’t think you have much to worry about. The things you have heard about damage from lean conditions usually occur on larger engines with 3-6cylinders. Your 6hp will let you know if it is too lean by faltering/hesitating/surging at WOT. Just make sure the cooling system is working properly, including the thermostat. And, don’t be afraid of using a little extra oil in the mix. Change the gear lube often to catch minor leaks before major damage occurs.
