4-8ESpark plug Cleaning/Adjustment/ 4-10ReplacementGreasing points Greasing 4-9Gear oil Change 4-19Fuel system Inspection 4-11Fuel filter Inspection/ 4-12ReplacementFuel tank (*2) Cleaning 4-4Idling speed Adjustment 4-13Anode(s) Inspection/ 1 1 4-21ReplacementOutboard motor Inspection 4-22exteriorCooling water Flushing 4-5passages (*1)Propeller Inspection 4-17Carburetor Inspection/ 1 1 —AdjustmentBolts/Nuts Retightening 1 1 4-22Engine oil Change 4-14Valve clearance Inspection/ 1 1 —AdjustmentThermostat Inspection 1 —TCI unit clearance Inspection/ 1 1 —AdjustmentIntervalItemInitial Every Referpage10 hours(1 month)50 hours(3 months)100 hours(6 months)200 hours(1 year)EMU00853MAINTENANCE CHARTFrequency of maintenance operations may be adjusted according to the operating con-ditions, but the following table gives general guidelines.The mark () indicates the check-ups which you may carry out yourself.The mark (1) indicates work to be carried out by your Yamaha dealer.*1.When operating in salt water, turbid or muddy water, the engine should be flushed with cleanwater after each use.*2.If a portable fuel tank is used.NOTE:If leaded gasoline is usually used, engine valves and related parts should be inspectedafter every 100 hours of operation in addition to the items on the maintenance chartabove.