Changing The Engine Oil - Yamaha WR450F Owner's Service Manual

NOTICE
• Since engine oil also lubricates the clutch,
the wrong oil types or additives could
cause clutch slippage. Therefore, do not
add any chemical additives.
• Do not allow foreign material to enter the
crankcase.
Recommended brand
YAMALUBE
Type
SAE 10W-40, SAE 10W-50, SAE
15W-40, SAE 20W-40 or SAE
20W-50
Recommended engine oil grade
API service SG type or higher,
JASO standard MA

CHANGING THE ENGINE OIL

EAS2GC1097
Stand the vehicle upright on a level surface.
1. Start the engine, warm this up for 3 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 down the kick-
starter lever 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 O-ring "3".
1
c. Install the new oil filter element and the oil fil-
ter element cover.
Oil filter element cover bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
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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.
3-17
ENGINE
2
3 New
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