Another way to stop the engine is to put your finger over the exhaust outlet (or use a rag over your finger if it's too hot. It floods the engine and kills it. Best done at idle. However, I think the fuel line methods are better for the engine.

Some engines like a "wetter" prime than others, where you cover the carb or muffler outlet and turn 4-5 times after fuel reaches the carb. Others seem to like just a little fuel, 1-2 turns. and it may change as the engine breaks in. So experiment with the amount of prime you give it.

Oh, when priming, set for full throttle, then cover the carb or exhaust and turn. Then back to a fast idle setting for starting.

If you find yourself using the starter a lot, for extended runs, you are usually under-primed. Though it's possible it's totally flooded. If you think it might be flooded, tipping the engine to allow fuel to run out of the muffler and carb works well. As does removing the fuel line and turning it over by hand or with the starter. Be careful with the starter if you think it's flooded, you can damage the engine. It's rare, but does happen. Sometimes if it's flooded, and you are cranking on the starter, you'll see raw fuel coming out the exhaust.

Some Evo engines are tighter than others, and will actually start easier by hand than with a starter. One of my students has an engine is like that. The engine backfires with the starter, or the starter slows the engine as mentioned above (and the prop comes off a lot with the electric because of the kicks). But the chicken stick gives it just the right push to get started.