Yamaha TT-R50EK 2018 Owner's Manual page 50

Periodic maintenance and adjustment
4. If the engine oil is at or below the
minimum level mark, add suffi-
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,
the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
1 2
7
1. Engine oil drain bolt
2. Gasket
4. Install a new gasket and the drain
bolt, and then tighten the drain
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:
0.80 L (0.85 US qt, 0.70 Imp.qt)
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" or oils of a high-
er quality than specified. In
addition, do not use oils labeled
"ENERGY CONSERVING II" or
higher.
 Make sure that no foreign mate-
rial enters the crankcase.
6. Check the O-ring for damage, and
replace it if necessary.
1
1. O-ring
7. Install and tighten the engine 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.
7-8
ECA11621