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Proper spark plug for 1977 mercury 7.5 hp outboard motor?

Anonymous

∙ 15y ago

Updated: 10/20/2022

The recommended spark plug for the 1977 model, 7.5 hp Mercury outboard is a Champion L78V, or NGK BUHW-2. Both brands are Perma Gap type plugs, with the Champion being the manufacturer supplied plug back in 1977.

Wiki User

∙ 15y ago

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