Yamaha 90D Owner's Manual

Contents

Maintenance3725.0 Nm (18.4 ft-lb) (2.55 kgf-m)Propeller nut:35.0 Nm (25.8 ft-lb) (3.57 kgf-m)EMU28222Transporting and storingoutboard motorWARNINGEWM00690 Leaking fuel is a fire hazard. Whentransporting and storing the outboardmotor, close the air vent screw and fuelcock to prevent fuel from leaking. USE CARE when transporting fuel tank,whether in a boat or car. DO NOT fill fuel container to maximumcapacity. Gasoline will expand consid-erably as it warms up and can build uppressure in the fuel container. This cancause fuel leakage and a potential firehazard.WARNINGEWM00700Never get under the lower unit while it istilted, even if a motor support bar is used.Severe injury could occur if the outboardmotor accidentally falls.CAUTION:ECM00660Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tilt sup-port and fall. If the motor cannot be trail-ered in the normal running position, usean additional support device to secure itin the tilt position.The outboard motor should be trailered andstored in the normal running position. If thereis insufficient road clearance in this position,then trailer the outboard motor in the tilt po-sition using a motor support device such asa transom saver bar. Consult your Yamahadealer for further details.EMU30272Storing outboard motorWhen storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important procedures mustbe performed to prevent excessive damage.It is advisable to have your outboard motorserviced by an authorized Yamaha dealerprior to storage. However, you, the owner,with a minimum of tools, can perform the fol-lowing procedures.CAUTION:ECM01411 Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder throughthe exhaust port and cause engine trou-ble. Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.EMU28301ProcedureEMU28380Flushing with the flushing attachment1. Wash the outboard motor body usingfresh water. For further information, seepage 40.2. Fill the fuel tank with fresh fuel and addone ounce of “Yamaha Fuel Conditionerand Stabilizer” (Part No. LUB-FUELC-12-00) to each gallon of fuel.NOTE:The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qualified mechanic if the fuel system isto be drained instead.3. Remove the top cowling and silencer