1998 Johnson Evinrude "EC" 90, 100C, 105C, 115, 150, 150C, 175 60 deg. LV Service Manual, P/N 520210, Page 50Get this manual
20-Hour Check 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 present2Check power trim reservoir for proper fluid level3Lubricate steering cable ram with OVIC Triple-Guard grease4Check torque on cylinder head screws and spark plugs: Cylinder Head Screwsfollow torque sequence outlined in Powerhead, Section 4Loosen screw, one at time, V4 turn before applying torque Spark Plugsloosen spark plug V4 turn before applying torque5Check all linkage adjustments6Check engine mounting hardware for tightness7Lubricate all grease fittings with OVIC Triple-Guard grease8Check entire boat and engine fuel system for signs of deterioration, damage, or leaks9Check all engine systems for signs of deterioration or problems10Check for proper operation of the oil supply systemVerify oil is being consumed from the oil tankAlso check for evidence of water in the oil tankIf water is found, review the installation and location of the oil tankDo not operate the engine if water is present in the oil tankSerious powerhead damage can occur