1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 287Get this manual

1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 287

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Preliminary Checks Ignition Spark Check
2 Connect spark gap tester Quicksilver (91-63998A1) to No1 spark plug wire and to good ground on engine3 Connect Remote Starter Switch Quicksilver (91-520