Maintenance66EMU28411Lubrication (oil injection models)1. Install the spark plug(s) and torque toproper specification. For information onspark plug installation, see page 72.2. Fill the oil tanks. This prevents the for-mation of condensation. For models witha remote oil tank, it may be necessary tomanually override the control unit tocompletely fill the engine oil tank.3. Change the gear oil. For instructions,see page 76. Inspect the oil for the pres-ence of water which indicates a leakyseal. Seal replacement should be per-formed by an authorized Yamaha dealerprior to use.4. Grease all grease fittings. For further de-tails, see page 71.TIP:For long-term storage, fogging the enginewith oil is recommended. Contact yourYamaha dealer for information about foggingoil and procedures for your engine.EMU28450Cleaning the outboard motorAfter use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.TIP:For cooling system flushing instructions, seepage 64.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.EMU28509Periodic maintenanceWARNINGEWM01871These 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 trim and tilt switches oper-ate even when the ignition key is off.Keep people away from the switcheswhenever working around the motor.When the motor is tilted, keep awayfrom the area under it or between it andthe clamp bracket. Be sure no one is inthis area before operating the powertrim and tilt mechanism.● Allow the engine to cool before han-dling hot parts or fluids.● Always completely reassemble the mo-tor before operation.Maintenance, replacement, or repair ofthe emission control devices and sys-tems on models affixed with an emissionZMU03223