1998 Johnson Evinrude "EC" 125C, 130, 200, 225, 250 90 deg LV Service Manual, P/N 520212, Page 58Get this manual
Maximum Spark Advance Note Install all spark plugs and connect spark plug leadsRun the engine with the proper test propellerDo not run the engine with propeller or flushing adapter for this adjustment1Connect timing light to the No.1 cylinder2Start the engine and allow it to reach normal operating temperature[] 3Run the engine between 4500 and 5000 RPMCheck timing on flywheel gridThe timing pointer must align with correct degree mark on the flywheel gridSee chart below Maximum Spark Advance