Yamaha 15F Owner's Manual

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Maintenance46TIP:If the propeller nut does not align with thepropeller shaft hole after tightening to thespecified torque, tighten the nut further toalign it with the hole.EMU2928CChanging gear oilWARNINGEWM00801 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 gearoil drain screw is at the lowest point pos-sible.2. Place a suitable container under the gearcase.3. Remove the gear oil drain screw andgasket. NOTICE: If there is an exces-sive quantity of metal particles on themagnetic gear oil drain screw, thiscan indicate lower unit problem. Con-sult your Yamaha dealer. [ECM01901]TIP: If a magnetic gear oil drain screw isequipped, remove all metal particles fromthe screw before installing it. Always use new gaskets. Do not reuse theremoved gaskets.4. Remove the oil level plug and gasket toallow the oil to drain completely.NOTICE: Check the used gear oil afterit has been drained. If the gear oil ismilky or contains water or a largeamount of metal particles, the gearcase may be damaged. Have aYamaha dealer check and repair theoutboard motor. [ECM00714]TIP:For disposal of used oil, consult your Yamahadealer.5. Put the outboard motor in a vertical posi-tion. Using a flexible or pressurized fillingdevice, inject the gear oil into the gear oildrain screw hole.1. Gear oil drain screw2. Oil level plugZMU0206421Recommended gear oil:YAMALUBE outboard gear oil or Hyp-oid gear oilRecommended gear oil grade:SAE 90 API GL-4Gear oil quantity:0.250 L (0.264 US qt, 0.220 Imp.qt)ZMU02065