I own an FA50 (1984) and I just got a new spark plug. I've bought several already and used them. They are still okay to use, I just like to change them once a year, because they are cheap.
I never gaped them because I don't how and more importantly I don't have the tools. I know it probably is not necessary to do this (because I never have done it and I have had no problems), but I was wondering what the benefits of gaping a plug are?
Also, what dimension should the gap be, and where can I get it done (what price should I expect)?
Thanks again for the help