Yamaha F4 Owner's Manual page 58

Maintenance
is hot and should be handled with care
to avoid burns.
Be sure the outboard motor is securely
G
fastened to the transom or a stable
stand.
ECM00970
CAUTION:
Do not overfill the oil, and be sure the
G
outboard motor is upright (not tilted)
when checking and changing the en-
gine oil.
If the oil level is above the upper level
G
mark, drain until the level meets the
specified capacity. Overfilling the oil
could cause leakage or damage.
ECM01710
CAUTION:
Change the engine oil after the first 20
hours of operation or 3 months, and ev-
ery 100 hours or at 1-year intervals there-
after. Otherwise the engine will wear
quickly.
NOTE:
Change the engine oil when the oil is still
warm.
1. Put the outboard motor in an upright po-
sition (not tilted).
2. Prepare a suitable container that holds a
larger amount than the engine oil capac-
53
ity. Loosen and remove the drain screw
while holding the container under the
drain hole. Then remove the oil filler cap.
Let the oil drain completely. Wipe up any
spilled oil immediately.
1. Drain screw
3. Put a new gasket on the oil drain screw.
Apply a light coat of oil to the gasket and
install the drain screw.
Tightening torque:
See page 41
NOTE:
If a torque wrench is not available when you
are installing the drain plug, finger tighten the
bolt just until the gasket comes into contact
with the surface of the drain hole. Then tight-
en 1/4 - 1/2 turn. Have the drain plug torqued
to the correct value with a torque wrench as
soon as possible.
4. Add the correct amount of oil through the
filler hole. Install the filler cap.
ZMU02699
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ZMU02709