Re: 125 force L drive spark plug question
I guess you have the "gapless" plugs.<br />They have a metal ring around the outside, and a small post (electrode) in the center. The post is only about 1/64" tall.<br />The spark jumps from the post to the outer ring.<br />Some people don't like them.<br />I do like them, easy to clean, no gapping, etc.<br />When the center post is worn down even with the insulator, it is time to replace them. <br /><br />Warning, some places are charging $12-$15 a piece for them.<br />But you can get them for $4 at a Mercury dealer, or online.