2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 109Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 109

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IGNITION
Timing Fluctuates

Loss Of Oil PressureOver HeatingShift InNOTE: It is considered normal for the terrupt Switch:timing retards and fluctuates, rpm timing to fluctuate approx

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