Small Engine Troubleshooting Problems? Ask a Mechanic Now.
To start it, turn the switch to on.
Close the choke.
Crank the unit.
When it starts, open the choke.
Your exact words were "I have no idea what to do to start it. I used it a couple of years ago but can't remember how to start it. " And that is what I gave you - instructions on how to start it.
You did mention looking at a Quick Start Guide, but you did not say that you had tried that, and it did not work. I can't see or hear what you are doing, and I only know as much - or as little - as you tell me.
In fact, when the system asked you if you were going to do the work yourself, you replied "What work?"