Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 81Get this manual

Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 81

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Cleaning Piston Ring Grooves A broken rectangular piston ring can be used as tool for scraping carbon from ring groovesCarefully scrape carbon from ring grooves without scratching the side surfaces of