1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 43Get 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 present2On mechanically steered engines, lubricate cable ram with OMC Triple-Guard grease3Check torque on cylinder head screws and spark plugs Cylinder Head ScrewsFollow torque sequence outIi ned in Powerhead, Section Spark PlugsLoosen spark plug 14 turn before applying torque4Check all linkage adjustments5Check engine mounting hardware for tightness6Lubricate all grease fittings with OMC Triple-Guard grease7Check entire boat and engine fuel system for signs of deterioration, damage, or leaks8Check all engine systems for signs of deterioration or problems