Yamaha F25 - Manual (Page 47)

Maintenance
42
2. Install the spacer (if equipped), thrust
washer, and propeller on the propeller
shaft.
3. Install the spacer (if equipped) and the
washer. Tighten the propeller nut until
there is no forward-and-backward move-
ment.
4. Align the propeller nut with the propeller
shaft hole. Insert a new cotter pin in the
hole and bend the cotter pin ends.
NOTE:
If the propeller nut does not align with the pro-
peller shaft hole after tightening it, loosen the
nut until it aligns with the hole.
EMU29282
Changing gear oil
WARNING
EWM00800
● Be sure the outboard motor is securely
fastened to the transom or a stable
stand. You could be severely injured if
the outboard motor falls on you.
● Never get under the lower unit while it is
tilted, even when the tilt support lever or
knob is locked. Severe injury could oc-
cur if the outboard motor accidentally
falls.
1. Tilt the outboard motor so that the gear oil
drain screw is at the lowest point possi-
ble.
2. Place a suitable container under the gear
case.
3. Remove the gear oil drain screw and gas-
ket.
NOTE:
● If a magnetic gear oil drain screw is
equipped, remove all metal particles from
the screw before installing it.
● Always use new gaskets. Do not reuse the
removed gaskets.
4. Remove the oil level plug and gasket to
allow the oil to drain completely.
CAUTION:
ECM00710
Inspect the used oil after it has been
drained. If the oil is milky, water is getting
into the gear case which can cause gear
damage. Consult a Yamaha dealer for re-
pair of the lower unit seals.
NOTE:
For disposal of used oil, consult your Yamaha
dealer.
5. With the outboard motor in a vertical po-
sition, and using a flexible or pressurized
filling device, inject the gear oil into the
gear oil drain screw hole.
1. Gear oil drain screw
2. Oil level plug
U69M15E0.book Page 42 Wednesday, April 5, 2006 4:48 PM