Mercury 60HP Spark Plug Service & Replacement - (How to Guide in 4K)

Replacing spark plugs in your Mercury outboard boat motor is really quite easy. Swapping the spark plugs is something my 60HP Mercury requires at the 3-year, or 300-hour, mark. In my case, 3 years have passed so I performed the entire outboard motor service and made a quick video showing how to put new spark plugs in your boat's motor.
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