Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 49Get this manual

Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 49

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IGNITION SYSTEM
ASPARK TEST 1 Install spark gap tester (9163998A 1) between high tension spark plug lead and engine ground

2 Crank engine over using starter ropeSpark should occur a