Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 71Get this manual
IGNITION
Multimeter Ohm Checks
Tested Part Stator Charge Coil Black Power Bobbin Charge Coil Stator Battery Charge Coil (6 Amp Stator Battery Charge Coil (15 Amp Crank Position Sensor Ignition Coil Primary (with wires disconnected) Ignition Coil Secondary (test with coil leads disconnected) Black Red Black Red Black White (2) BlacklWhite Rx Black (B) High Tension Lead Black (B) lk 2.723.68 0180.24 Red Black Red Black Red Black Red WhiteGreen (1) YelBlk Rx1Q YelIBlk Yel Rx1Q Yel Yel 1Q Yel Red (1) xl 300350 0.22-0.24 0.9-1.1 6.7-7.1 Multimeter Wires Red Connected ToGreenlWhite (2) Rx 660-710 Meter Scale Meter Reading
NOTE: Copper is an excellent conductor, however, resistance may notably val}' between low and high temperatureTherefore, reasonable differences can be accepted between resistance readings and specificationsThe above readings are for cold (room temperature) engineResistance will increase if the engine is warm
Ignition Diagnostic Procedures