All carbs.....all engines use vaccum, thats how the gas gets in.
Maybe he meant that marine distributors don't use vaccum, which may be true, but I think someone here observed that you may not have a marine engine in your boat so you probably need the vaccum line hooked up to the distributor for the vaccum timing advance to work correctly.
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Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke.
1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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