Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
First, there is only one correct adjustment to the governor arm, so let's set that first and see where we are afterward, please.
With the engine stopped, loosen the hardware holding the base of the governor arm and move the linkage and rotate the shaft as far as they will go toward wide open throttle. Hold them in place then re-tighten the hardware. This puts the follower arm in firm contact with the governor spool inside the engine.
Let me know and we'll continue.
Thank you. That's exactly what I was after. Here's a couple of drawings. Some were made with a screw to adjust the idle, others had a bend tab. Make the adjustments in the high/low locations shown to set your engine at 1850-2150 rpms low, and 3450-3750 rpms high. If you don't have a tach, you'll just have to go be ear and experience...
Let me know how you make out please. If we need to keep working just let me know but it sounds like this will get you what you're after now.