1992 Johnson Evinrude "EN" 90 deg. Cross V Service Manual, P/N 508145, Page 47Get this manual
Maximum Spark Advance
r::=J Run the engine with the proper test wheelDo not run the
engine with propeller or flushing adapter for this adjustment1121 1Make initial adjustment of the adjustment screw to 38 7 16 in(9-11 mm) This is just an initial starting dimension
2Connect timing light to the No.1 cylinderStart and run the engine at minimum of 5000 RPM in FORWARD gearObserve the number indicated by the timing pointer with No1 cylinder timing gridStop the engine to prevent contact with rotating parts'" 3Connect the timing light to No.2 cylinderStart and run the engine at minimum of 5000 RPM in FORWARD gearObserve the number indicated by the timing pointer with No.2 cylinder timing gridStop the engine