Maintenance461. Disconnect and remove the battery fromthe boat. Always disconnect the blacknegative cable first to prevent the risk ofshorting.2. Clean the battery casing and terminals.Fill each cell to the upper level with dis-tilled water.3. Store the battery on a level surface in acool, dry, well-ventilated place out of di-rect sunlight.4. Once a month, check the specific gravityof the electrolyte and recharge as re-quired to prolong battery life.EMU28450Cleaning the outboard motorAfter use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.NOTE:For cooling system flushing instructions, seepage 43.EMU28460Checking painted surface of motorCheck the motor for scratches, nicks, or flak-ing paint. Areas with damaged paint aremore likely to corrode. If necessary, cleanand paint the areas. A touch-up paint is avail-able from your Yamaha dealer.EMU28476Periodic maintenanceWARNINGEWM01070Be sure to turn off the engine when youperform maintenance unless otherwisespecified. If you or the owner is not famil-iar with machine servicing, this workshould be done by your Yamaha dealer orother qualified mechanic.EMU28510Replacement partsIf replacement parts are necessary, use onlygenuine Yamaha parts or parts of the sametype and of equivalent strength and materi-als. Any part of inferior quality may malfunc-tion, and the resulting loss of control couldendanger the operator and passengers.Yamaha genuine parts and accessories areavailable from your Yamaha dealer.ZMU02550