Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 62Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 62

SPARK PLUG CAP REMOVAL NOTE: High tension cables must have spark plug cap removed before testingCap contains 5k ohm

SPARK PLUG CAP RESISTOR TEST

resistorIMPORTANT: To remove spark plug cap from high tension leads, turn cap counterclockwise while applying slight outward pressure00 NOT PULL HARD or lead may be damagedTo install cap, turn cap clockwise threading cap onto high tension lead55852 55853

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