Onan spark plug
Simple question: What size socket is required to remove the spark plug from my gen set?
Forum Discussion
It's a 13/16ths, a true spark plug socket has a rubber insert in them, make sure you are pushing it on all the way, they can be a little tight when not used a lot. I just changed mine in a 3600lp Microquiet. I am having starting problems also, only starts after a lot of cranking.
