This engine won't even choke due to the crankcase ventilation setup. It won't make any suction because air displaced in the crankcase is pushed into the intake. This means no fuel draw at starting. Follow the manual for starting. I would open the needle one turn and crank it over without the plug lit until the engine is wet. Turn it back in to the running setting and start with the starter. These engines will not hand start for the above reasons.

The mixture control needle is commonly called the idle mixture needle. There is a starting point explained in the manual if you have already changed it's setting significantly.

I want to be clear there is no adjustment on the regulator.

If this is the FS-91SII-P with the crankcase ventilation system, we are all on the same page.