1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 21Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 21

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MAINTENANCE
Spark Plug Inspection
Inspect spark plugs at the recommended intervals1 Remove the spark plug leads by twisting the rubber boots slightly and pull off2 Remove the spark plugs t

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