1998+ Mercury Mariner 25HP Bigfoot Service Manual, Page 8Get this manual
SPECIFICATIONS
IGNITION SYSTEM
Readings taken 68F (20C)
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 Manual Start Electric Start: Starter Type Output Ampere Draw Under: (Load) (No Load) Battery Rating Minimum Requirement