See if we can agree :
- Leg locking : stand up with the back handle jammed between your thighs, one hand on the front handle, steady arm.
- Ground start : kneeled on the ground, one foot passed through the back handle, one hand on the front handle, steady arm.
Both are the official ways.
But I almost never do that, I can't give enough speed at the starter rope.
- Drop start : one hand on the front handle, folded then extended arm to give more relative momentum (good grip on the front handle required). My favorite way. Variant with the bar's nose put on a stump/log for the big saw and long bar.
- Throw start : one hand on the back handle, folded arm at chest level. The other hand holds the starter rope and the saw's body, then pushes away violently the saw in a wide circular motion while the folded arm extends. The most momentum and can play with the throttle (for the hard to start), but the less control and a high risk to hit something. I never ever do that.
I don't see what the roll start is. Please, complete.
As for 4 strocking, the engine says "blo-blo-blo-blo" at high speed. I like thinking that it is like it makes bubbles !