1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 109Get this manual

1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 109

Timing Wheel Indexing, Erratic Ignition Internal power pack problems or shorted isolation diodes could cause power pack to fire erratically or continuouslyTo troubleshoot this situation, you must determine that each cylinder is firing at the correct time and no more than once per revolution1Start the engine in test tank and run it at the RPM where the problem exists
rv alternatelyconnect an induction timing light to each cylinder, 2Carefully

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