Do you know how to read your spark plugs? https://www.youtube.com/watch?v=52UmlOGAjK8 Ari breaks it down on this episode of The Shop Manual. • ⁠ Replacing your motorcycle spark plugs is a simple and crucial piece of maintenance, but there are a few ways you can screw it up. In this video, Ari shares some tips and tricks to make sure this important procedure goes smoothly, and answers questions about how to gap your spark plugs, whether to use antiseize, and even how to tighten the plugs properly