Yamaha 115-225 HP Outboards Service Manual, Page 210Get this manual
I 1.1 ELEC
CLEANING, INSPECTION AND REPAIR
M525050
IGNITION COIL 1) Inspect the high-tension cables for damage and crack
2) Check the resistance of the primary coilPrimary coil resistance: Black- BlackIWhite 0.1530.2070 at 20 deg.C (68 deg.F)