1998+ Mercury Mariner 25HP Bigfoot Service Manual, Page 72Get this manual
IGNITION
Specifications
Type Spark Plug Type Gap Hex Size Hole Size Torque Firing Order Ignition Timing: Below 800 RPM ECM (pn 855311) ECM (pn 856058856190) ECM (pn 856190-856482-) ECM (pn 856177856178-) ECM (pn 878433) Fully Advanced (6000 RPM) Charge Coil Resistance Crank Position Sensor Resistance Ignition Coil Resistance: Primary Secondary (Wo Boots) ECM Engine Speed Limiter Soft Reduction (Retards Timing) Spark Cut-Out Reduction (Percentages of ignition spark are Cut-Out) ECM OverheatLow Oil Pressure Speed Control Oil Pressure Switch Alternator Type AMP Manual Alternator: Output Battery Charging Resistance 15 AMP Electric Alternator: Output Battery Charging Coil Resistance Power Bobbin Resistance (For Electrothermal Valve) Quicksilver Tachometer Setting