Andy
Was going to leave it till winter but is so annoying it starts rich without choke and can snatch the throttle open and it instantly picks up without hesitation, whereas the other engine will just stop and once its been run a short while is fine, this morning I started it and seamed worse for a time so took the top off and had a good look and the two visible jets have slots in for a screwdriver so they are removable. I will try the agent again and se if Briggs suggest a smaller slow running jet or bigger air bypass, could only see these two jets, however can see plugged porting, I have had carbs before plugged like that but the plugs could be removed to adjust.
