I bought the same one last spring, and had some issues to start, especially when warm.
Cold start, prime bulb, kill switch up / on. Full choke and couple pulls to start. Oil light should go out shortly after it starts. Needs full choke for a bit to warm it up.
If it doesn't start after 2 pulls then use the push button to bypass forward and turn throttle full. Try starting again. RPMs are going to take off so be ready to throttle down .
Also the carb has an accelerator pump so every time to advance the throttle with the motor off it will dump fuel in the carb. Easy to flood.