one is your primary which goes onto lever for chocking to bent up flap with hole in it, this is for so ruuning ie idle, secondary long spring goes on to lever to right of that, ie the long black spring, these can be adjusted by bening them up and down to adjust your idle speed and fast running speed. for diagrams that show exactly what i,m talking about is on the briggs and stratton uk site. good luck.
ally t, May 2012
