1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Manual, Page 48Get this manual
Maximum Spark Advance Adjustment
INote Run the engine with the proper test wheelDo not run the
engine with propeller or flushing adapter for the adjustment1Connect timing light to the No.1 cylinder spark plug lead2Start the engine and allow it to reach normal operating temperature3Run the engine to minimum of 5000 RPM in FORWARD gear with timer base fully advancedThe engine timing mark must align with the correct degree mark on the flywheel gridSee chart below
Maximum Spark Advance 50TTL, 60TTL, 65RS 1r BTDC
PCE0021
4Stop the engine to prevent contact with rotating partsLoosen cam roller screwRotate cam roller nut to achieve specified timingTighten screw and verify timing following Steps and 3Shift Lever Detent Adjustment 1While rotating the propeller shaft, move the shift lever to NEUTRAL position2The lower detent spring notch of the shift lever detent