Maintenance49EMU28931GreasingYamaha marine grease (Water resistant grease)115EMU28952Cleaning and adjusting spark plugWARNINGEWM00560When removing or installing a spark plug,be careful not to damage the insulator. Adamaged insulator could allow externalsparks, which could lead to explosion orfire.The spark plug is an important engine com-ponent and is easy to inspect. The conditionof the spark plug can indicate somethingabout the condition of the engine. For exam-ZMU04149
