Maintenance61TICE: Do not leave the garden hoseconnector loose on the bottom cowl-ing fitting or let the hose hang freeduring normal operation. Water willleak out of the connector instead ofcooling the engine, which can causeserious overheating. Be sure the con-nector is tightened securely on thefitting after flushing the engine.[ECM00541]TIP: When flushing the engine with the boat inthe water, tilting up the outboard motor un-til it is completely out of the water willachieve better results. For cooling system flushing instructions,see page 57.EMU28451Cleaning the outboard motorAfter use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.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.EMU37003Periodic maintenanceWARNINGEWM01942These procedures require mechanicalskills, tools, and supplies. If you do nothave the proper skills, tools, or suppliesto perform a maintenance procedure,have a Yamaha dealer or other qualifiedmechanic do the work.The procedures involve disassemblingthe motor and exposing dangerous parts.To reduce the risk of injury from moving,hot, or electrical parts: Turn off the engine and keep the key(s)and engine shut-off cord (lanyard) withyou when you perform maintenanceunless otherwise specified. The power tilt switch operate evenwhen the ignition key is off. Keep peo-ple away from the switches wheneverworking around the motor. When themotor is tilted, keep away from the areaunder it or between it and the clampbracket. Be sure no one is in this areabefore operating the power tilt mecha-nism. Allow the engine to cool before han-dling hot parts or fluids. Always completely reassemble the mo-tor before operation.EMU28511Replacement partsIf replacement parts are necessary, use onlygenuine Yamaha parts or parts of equivalentdesign and quality. Any part of inferior qualitymay malfunction, and the resulting loss ofcontrol could endanger the operator andpassengers. Yamaha genuine parts and ac-cessories are available from your Yamahadealer.