All my equipment,(including my 1993 Mighty Max pickup: which I run a different type of NGK in it) runs better when I use NGK spark plugs...My Stihl yard work equipment makes weed eating, edging and blowing an easy task--I don't have to stop to perform maintenance on my equipment due to a cheap/unreliable spark plug. I love these plugs and will continue to use them for as long as I have all of my equipment....The equipment I use recommends using NGK spark plugs for best and long lasting performance....
These CMR6H spark plugs fit both my Stihl trimmer and blower. The gap was almost perfect out of the box at .020. They work great, and at this discounted price, it's easy to justify changing them yearly.