Mercury Optimax 200/225 from year 2000 Service Manual., Page 134Get this manual
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IGNITION
DDT Functions Optimax Models Software Version 1.0
01MY DI ECMCODE IGN PRI .38-.78 ohm SEC 8.1-8.9 Kohm DINJ 1.0-1.6 ohm FINJ 1.7-1.9 ohm TYPICAL TPI RANGE TPI 0.19-1.0v IDLE 3.45-