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I just bought my first Sea Doo last week. I've owned 3 Polaris watercraft, and I've seen 3 holes burned in the PTO piston. Decided to try something else. It turned out to be a 97 GTS with a single carb 720. I put in a fresh set of gapped plugs and did a plug read. The front plug looks almost perfect. Nice and brown on the rim with just a small amount of soot/ash on either side of the electrode. The rear plug looks like it may be just a tad lean. My question is, with a single carb, how do you get each plug to look the same? Kinda nervous about running lean after the luck I've had in the past!!
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