Yamaha YFM80RX Owner's Manual page 79

To change the engine oil
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Place an oil pan under the engine to collect
the used oil.
4. Remove the engine oil filler cap, and then re-
move the engine oil drain bolt to drain the oil
from the crankcase.
1. Engine oil drain bolt
5. Check the O-ring for damage and replace it if
necessary.
6. Install the engine oil drain bolt, and then tight-
en it to the specified torque.
1
Tightening torque:
Engine oil drain bolt:
20 Nm (2.0 m·kgf, 14.5 ft·lbf)
7. Add the specified amount of the recommend-
ed engine oil, and then install and tighten the
engine oil filler cap.
Recommended oil:
See page 10-1.
Oil quantity:
0.80 L (0.85 US qt) (0.70 Imp.qt)
ECB00300
CAUTION:
G In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of "CD" or oils of
a higher quality than specified. In addition,
do not use oils labeled "ENERGY CONSERV-
ING II" or higher.
G
Make sure that no foreign material enters the
crankcase.
8. Start the engine, and then let it idle for several
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