1993 Johnson Evinrude "ET" 40 thru 55 Service Repair Manual, P/N 508283, Page 50Get this manual

1993 Johnson Evinrude "ET" 40 thru 55 Service Repair Manual, P/N 508283, Page 50

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Maximum Spark Advance Adjustment Run the engine with the proper test wheelDo not run the engine with propeller or flushing adapter for the adjustment1 Connect timing light to the top cylinder's spark

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