Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 111Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 111

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TIMING, SYNCHRONIZING,ADJUSTING
Type Spark Plug: Type Gap Hex Size Firing Order Ignition Timing: Idle (800 rpm) WOT (6000 rpm) Charge Coil Resistance Crank Position Sensor Resistance Ignition Co