Yamaha F100B Owner's Manual page 62

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Maintenance
hours of operation, and every 100 hours
or at 6-month intervals thereafter. Other-
wise 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-
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
1. Drain screw
3.
Put a new gasket on the oil drain screw.
Apply a light coat of oil to the gasket and
57
install the drain screw.
Drain screw tightening torque:
28.0 Nm (20.7 ft-lb) (2.86 kgf-m)
NOTE:
If a torque wrench is not available when you
are installing the drain screw, finger tighten
the screw just until the gasket comes into
contact with the surface of the drain hole.
Then tighten 1/4 to 1/2 turn more. Tighten
the drain screw to the correct torque with a
torque wrench as soon as possible.
4.
Add the correct amount of oil through the
filler hole. Install the filler cap.
Recommended engine oil:
4-stroke outboard motor oil
ZMU04240
Engine oil quantity (excluding oil filter):
4.3 L (4.55 US qt) (3.78 Imp.qt)
1. Oil filler cap
5.
Start the engine and watch to make sure
the low oil pressure-warning indicator (if
equipped) turns off. Make sure that
ZMU04241
there are no oil leaks.
ECM00681
CAUTION:
If the low oil pressure-warning indicator
does not turn off or if there are oil leaks,
1
ZMU04242

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