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Just had the reply from D.S, it confirms what I thought! :-The rings should be installed onto the piston thus; The thick ring with the silver/grey edging and the "1N" marking goes on top. The "1N" mark faces upwards. As a general rule, any writing on rings always face upwards. The thick black ring goes second. The remaining 3 rings form the oil scraper which goes at the bottom, the 2 thin rings sandwich the serrated ring.So away I go!!Rob
Mine has no wear ridge even after 35000 miles and ovality that's well within spec. Must admit all the other aircooled engines that I have opened up have had the ridge but they weren't Honda, Honda are great!Rob
Quote from: UKROBK7 on July 01, 2011, 03:21:52 PMJust had the reply from D.S, it confirms what I thought! :-The rings should be installed onto the piston thus; The thick ring with the silver/grey edging and the "1N" marking goes on top. The "1N" mark faces upwards. As a general rule, any writing on rings always face upwards. The thick black ring goes second. The remaining 3 rings form the oil scraper which goes at the bottom, the 2 thin rings sandwich the serrated ring.So away I go!!RobJust remember that if there is a ridge on the top of the bore then standard rings can get broken if you don't hone it off, normally you would fit ridge dodgers, they have a recess cut out the top of the ring to miss the wear ridge. It will run but the first time you give it wellie the rings will break.