I have heard yamaha, Mercury, and suzuki. Although Suzuki is the quietest the mercury is a much better motor. Yamahas are junk. Evinrude and other 2 strokes are loud, but they are the most fuel efficient, and hands down the best motors. This is a common misconception because many think 4 stroke is the best. Four stroke motors are the quietest, but they only get good gas mileage at a very small non desirable rpm range. While a 2 stroke engine is almost as fuel efficient when pushed to the limit as the 4st is at cruise.vdz4k
An outboard engine is an engine attached to the outside of a boat. An outboard engine is usually contained within its own casing. By contrast, an inboard engine is enclosed within the hull of the boat itself.
Honda makes the quietest small engine. And be prepared to pay big $ for them too.
Outboard means "outside", for example, an outboard motor as opposed to an inboard engine.
The superlative form of the word quiet is quieter
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A digital clock is the quietest.
outboard
The quietest in the group are all of them.
Valve springs
1999
Outboard motor.
1978 80 Mercury Outboard IDLE ADJUSTMENT