Hello yes you are correct it does have a LSN but I did not get small screw driver for adjusting. Is black screw on top of carb not the idle adjust screw, as LSN is located inside barrel with throttle arm. If engine is running hot now will it not run hotter when more than 25% throttle. Surely I need to richen not lean HSN, otherwise will run hotter...want do you think?.
I read book and yes it says after 2 tanks run more throttle and start leaning HSN but I think in my case emgine will run too hot. I will try pinch method to test if my LSN is correct, or is this waste of time until I get HSN correct. My HSN is at 4 turns but book says 2 1/2 turns for breakin. All this is very strange to me as in theory I am too rich so engine should be very cool!