Changing The Engine Oil - Yamaha YZ450FX 2019 Owner's Service Manual

EAM30225

CHANGING THE ENGINE OIL

Stand the vehicle upright on a level surface.
1. Start the engine, warm this up for several
minutes, and then stop the engine and wait
about 5 minutes.
TIP
This model is equipped with an engine auto-stop
system. The engine stops automatically if left
idling for 7 minutes. If the engine stops, push the
start switch or push the start switch to restart the
engine.
2. Place an oil pan under the drain bolt.
3. Remove:
• Engine guard "1"
• Oil filler cap "2"
• Drain bolt (with gasket) "3"
1
3
4. If the oil filter element is also to be replaced,
perform the following procedure.
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a. Remove the oil filter element cover "1" and oil
filter element "2".
b. Replace the new O-ring "3".
c. Install the new oil filter element and the oil fil-
ter element cover.
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5. To check the oil strainer, perform the follow-
ing procedure.
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a. Remove the oil strainer "1".
b. Check the oil strainer.
Damage  Replace.
Clogging due to dirt  Wash with kerosene.
c. Replace the new O-ring "2".
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d. Install the oil strainer.
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6. Install:
• Gasket
• Drain bolt
7. Pour the specified amount of engine oil into
the oil filler cap hole.
3-14
1 1
3 3
Oil filter element cover bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
1
2
Oil strainer bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
New
Drain bolt
20 N·m (2.0 kgf·m, 15 lb·ft)
ENGINE
2 2