Mercury Optimax Diagnostic Guide., Page 23Get this manual

OPTIMAX DIAGNOSTIC GUIDE DID ENGINE SOUND CHANGE OR DROP RPM? 1=YES 2=NO

Press the key or Press the key
SELECT CYL TO TEST: 12345678 PRESS MODE TO CANCEL MISFIRE CHECK LIST: CHECK SPARK PLUG, SPARK PLUG LEAD, FUEL INJ CONNECTOR, Press the keyMISFIRE CHECK LIST: DIR INJ CONNECTOR, IGN COIL CONNECTOR IGN COIL MODULE Press the keyMISFIRE CHECK LIST: CHECK ECM HARNESS FOR CONTINUITY FOR SUSPECT CYLINDER

Available

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives