Yamaha TTR 125 2020 Owner's Manual page 44

Periodic maintenance and adjustment
1. Maximum level mark
2. Minimum level mark
4. If the engine oil is at or below the
minimum level mark, add suffi-
7
cient oil of the recommended type
to raise it to the correct level.
5. Check the O-ring for damage, and
replace it if necessary.
6. Insert the dipstick into the oil filler
hole, and then tighten the oil filler
cap.
To change the engine oil
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the engine
to collect the used oil.
3. Remove the engine oil filler cap
and engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
1. Engine oil drain bolt
4. Install the drain bolt and its new
gasket, and then tighten the bolt
to the specified torque.
Tightening torque:
Engine oil drain bolt:
20 N·m (2.0 kgf·m, 15 lb·ft)
5. Refill with the specified amount of
the recommended engine oil.
Recommended engine oil:
See page 9-1.
Oil change quantity:
1.00 L (1.06 US qt, 0.88 Imp.qt)
7-9
TIP
Be sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.
NOTICE
 In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of "CD". Make sure that
the engine oil doesn't contain
friction-reducing additives.
 Make sure that no foreign mate-
rial enters the crankcase.
6. Check the O-ring for damage, and
replace it if necessary.
7. Install and tighten the oil filler cap.
8. 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.
9. Turn the engine off, and then
check the oil level and correct it if
necessary.
ECAW0033