Tech Questions

It is recommended to use a Mercury Marine Service Manual as reference before starting and during any service or tuning activities. PRO BOATS has in stock Mercury Marine Service Manuals available at a 10% discount.
We can answer questions about Mercury Marine Engines & Drives Only.

Outboard engine models vary in specifications, including same horsepower engine in same model year.

Mercruiser engines mostly have GM casted & machined engine blocks but they are manufactured differently than automobile engine blocks and internal & external components are marine application not automobile.

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