Here's how I start mine:

Throttle 1/3 to 1/2.
Half choke
8-10 pumps on the fuel bulb
1 pull

It sputters and sometimes needs a couple of extra pumps on the fuel
bulb, but that is perfectly normal for a carbureted engine with a
gravity-fed fuel supply. After a few seconds it clears out and runs
like a top.

You've been spoiled by electronic fuel injection that takes care of
all of the choking and priming for you automatically.