Yamaha YFZ 2018 Owner's Manual page 102

11. Install the crankcase engine oil drain bolt, the
engine oil tank drain bolt and their new gas-
ket, and then tighten the bolts to their speci-
fied torques.
Tightening torques:
Crankcase engine oil drain bolt:
20 N·m (2.0 kgf·m, 15 lb·ft)
Engine oil tank drain bolt:
20 N·m (2.0 kgf·m, 15 lb·ft)
12. Refill with the specified amount of the recom-
mended engine oil through the engine oil tank
filler hole.
Recommended oil:
8
See page 10-1.
Oil quantity:
Without oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)
With oil filter element replacement:
1.45 L (1.53 US qt, 1.28 Imp.qt)
TIP
Be sure to wipe off spilled oil on any parts after the
engine and exhaust system have cooled down.
ECB00301
NOTICE
 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.
 Make sure that no foreign material enters the
crankcase.
13. Check the engine oil tank filler cap O-ring for
damage, and replace it if necessary.
14. Install and tighten the engine oil tank filler
cap.
15. Start the engine, and then let it idle for several
minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
16. Turn the engine off, and then check the oil
level and correct it if necessary.
17. Install the engine guard by installing the bolts,
and then tighten them to the specified torque.
NOTICE: Be sure to apply LOCTITE
engine guard bolts before installing them.
[ECB00372]
8-19
®
to the