Yamaha VF90 Owner's Manual page 79

2. Start the engine. Warm it up and keep
the idle speed for 5-10 minutes.
3. Stop the engine and leave it for 5-10 min-
utes.
4. Remove the top cowling.
5. Remove the oil filler cap. Pull out the dip-
stick and use the oil changer to extract
the oil completely.
1. Oil filler cap
1. Oil changer
TIP:
When using an oil changer, skip steps 6 and
7.
6. Prepare a suitable container that holds a
larger amount than the engine oil capac-
ity. Remove the drain screw and gasket
while holding the container under the
drain hole. Let the oil drain completely.
Wipe up any spilled oil immediately.
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2
1
1. Drain screw
1
2. Gasket
TIP:
If the oil does not drain easily, change the tilt
angle or turn the outboard motor to port and
starboard to drain the oil.
7. Put a new gasket on the oil drain screw.
Apply a light coat of oil to the gasket and
ZMU08700
install the drain screw.
Drain screw tightening torque:
27 N·m (2.75 kgf·m, 19.9 lb·ft)
TIP:
1
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
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torque wrench as soon as possible.
Maintenance
ZMU08108
73