I'm sorry that you are having problems with the manual for your Sovereign AC unit. If you have any questions you need answered about your ac check us out at Air Conditioning Boca Raton
Big hex plug 13/16 deep well socket Small hex 5/8 deep well.
Biggest problem With 2 cycle small engine equipment is Ethanol in gasoline softens the fuel lines to the point they look melted and collapse. You can buy non ethanol gas but it costs three times as much