Mercury - Maintenance Schedule Decal V6 FourStroke Series Marine Vinyl 8M0142526. Overview. When you spend enough time on the water, you learn that the little things often make the biggest difference in keeping an engine healthy. A simple reminder-something you see every time you tilt the cowling-can save you from forgotten service intervals and the headaches that follow. That is exactly why the Mercury Marine part number 8M0142526 matters. It is not flashy, but it gives you the comforting sense