1997 "EU" Johnson Evinrude 5 thru 15 Four Stroke Service Manual, P/N 507262, Page 55Get this manual
20-Hour Check
INote Outboard Marine Corporation encourages all Johnson and
Evinrude owners to return their new engines to an authorized dealer for mechanical checkThis check should be performed after approximately 20 operating hoursThe cost of this check should be figured at local dealer labor rates and paid for by the engine ownerThe 20-hour check should include: 1Drain and fill gearcase with recommended lubricantPressure and vacuum test gearcase if signs of water are present2Lubricate steering cable ram with aiC Triple-Guard grease3Check torque on cylinder head screws and spark plugs Cylinder Head Screwsfollow torque sequence outlined in Powerhead, Section Spark Plugsloosen spark plug V4 turn before applying torque