Force .28 4 Needles?
Hi,
I have been browsing through multiple forums but I did not find a clear answer.
In my quest to search for the right needle setting I was confused to what is the LSN on my engine. I have 1 screw at the servo side (black) and 1 screw on the outer side (brass). One of those is never mentioned. I assume the black one is the LSN but what does the brass one do?? I read it is a kind off spray needle??
Who can explain?