Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 75Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 75

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IGNITION
NOTE: High tension cables must have spark plug cap removed before testingCap contains 5k ohm resistorIMPORTANT: To remove spark plug cap from high tension leads, turn cap counter-