Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 24Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 24

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Detonation: Causes and Prevention Detonation in 2-cycle engine somewhat resembles thepinging" heard in an automobile engineIt can be otherwise described as tin-like "rattl ing" or "plinking" sound Det