Let's start with a little theory. The noise generated by the motor is divided into two types: high-frequency (in other words, screeching, whistling or ringing) and low-frequency (hum, roar). The first is more typical for 2-stroke engines. In the case of them, it will help:

1. Outside - installation of a soundproofing cover
2. From the inside - pasting the casing

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Modern technologies allow the production of outboard engines of various models and capacities. But they all tend to make loud and unpleasant sounds. Some boat owners pay particular attention to the loudness of the engine, mistakenly believing that the louder the sound, the higher its power rating. But as a rule, by the end of the trip, on a boat with such an engine, we would be asking ourselves: "How can the engine noise be reduced?"

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Soundproofing the outboard motor hood is the most common option, which can significantly reduce engine noise. In addition, it should be remembered that when performing this procedure yourself, you need to choose the right materials for sound insulation so that they do not lead to engine failure.

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Often, the implementation of sound insulation is carried out in two stages, such as:

1. External, a soundproofing cover is installed on the motor.

2. Internal, pasted over from the inside the casing of the engine cover.
At the same time, the above steps can be applied both separately and together for a more noticeable result.