Yamaha YZ 2023 Series Owner's Service Manual page 90

1 1
2 2
c. Install the new oil filter element and the oil
filter element cover.
Oil filter element cover bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
5. To check the oil strainer, perform the follow-
ing procedure.
a. Remove the oil strainer "1".
b. Check the oil strainer.
Damage  Replace.
Clogging due to dirt  Wash with kero-
sene.
c. Replace the new O-ring "2".
1
2
d. Install the oil strainer.
Oil strainer bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
6. Install:
• Gasket
New
• Drain bolt
Drain bolt
20 N·m (2.0 kgf·m, 15 lb·ft)
7. Pour the specified amount of engine oil into
the oil filler cap hole.
3 3
3-14
Engine oil quantity
Oil change
0.73 L (0.77 US qt, 0.64 Imp.qt)
With oil filter removal
0.75 L (0.79 US qt, 0.66 Imp.qt)
Quantity (disassembled)
0.95 L (1.00 US qt, 0.84 Imp.qt)
8. Install:
• Oil filler cap
9. Check:
• Oil level
Refer to "CHECKING THE ENGINE OIL
LEVEL" on page 3-13.
10.Check:
• Engine oil pressure
a. Slightly loosen the oil pressure check bolt
"1".
EWA19120
WARNING
When the engine is started with the check
bolt removed, oil will spout; therefore, al-
ways loosen it before the checkup.
1 1 1
b. Start the engine and keep it idling until oil
starts to seep from the oil pressure check
bolt.
EWA19130
WARNING
Always keep the engine idling speed during
the checkup without increasing the engine
speed.
ENGINE