Yamaha F250 LF250 Owner's Manual

Also see for F250: Maintenance Guide Owner's manual Owner's manual Owner's manual Owner's manual

Contents

Maintenance591. Apply Yamaha marine grease or a corro-sion resistant grease to the propellershaft.2. Install the thrust washer and propeller onthe propeller shaft.3. Install the spacer and washer. Tightenthe propeller nut to the specified torque.4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends.NOTE:If the propeller nut does not align with the pro-peller shaft hole after tightening to the speci-fied torque, tighten the nut further to align itwith the hole.EMU29281Changing gear oilWARNINGEWM00800 Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you. Never get under the lower unit while it istilted, even when the tilt support lever orknob is locked. Severe injury could oc-cur if the outboard motor accidentallyfalls.1. Tilt the outboard motor so that the gear oildrain screw is at the lowest point possi-ble.2. Place a suitable container under the gearcase.3. Remove the gear oil drain screw.NOTE:If the magnetic gear oil drain screw equipped:remove all metal particles from the screw be-fore installing it.4. Remove the oil level plug to allow the oilto drain completely.CAUTION:ECM00710Inspect the used oil after it has beendrained. If the oil is milky, water is gettinginto the gear case which can cause geardamage. Consult a Yamaha dealer for re-pair of the lower unit seals.NOTE:For disposal of used oil consult your Yamahadealer.5. With the outboard motor in a vertical po-sition, and using a flexible or pressurizedfilling device, inject the gear oil into thegear oil drain screw hole.1. Gear oil drain screw2. Oil level plug