Checking The Engine Oil Level; Changing The Engine Oil - Yamaha YZFR1W 2007 Service Manual

Compression pressure (with oil applied into
the cylinder)
Reading
Higher than without
oil
Same as without oil
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7. Install:
• Spark plugs
• Ignition coils
Spark plug
13 Nm (1.3 m·kg, 9.4 ft·lb)
8. Connect:
• Ignition coils
EAS20730

CHECKING THE ENGINE OIL LEVEL

1. Stand the vehicle on a level surface.
NOTE:
• Place the vehicle on a suitable stand.
• Make sure the vehicle is upright.
2. Start the engine, warm it up for several
minutes, and then turn it off.
3. Check:
• Engine oil level
The engine oil level should be between the
minimum level mark "a" and maximum level
mark "b".
Below the minimum level mark → Add the
recommended engine oil to the proper
level.
Diagnosis
Piston ring(s) wear or
damage → Repair.
Piston, valves, cylin-
der head gasket or
piston possibly defec-
tive → Repair.
3-11
Type
YAMALUBE 4, SAE 10W30 or
SAE 20W40
Recommended engine oil grade
API service, SG type or higher,
JASO standard MA
ECA13360
CAUTION:
• Engine oil also lubricates the clutch and
the wrong oil types or additives could
cause clutch slippage. Therefore, do not
add any chemical additives.
• Do not allow foreign materials to enter the
crankcase.
4. Start the engine, warm it up for several
minutes, and then turn it off.
5. Check the engine oil level again.
NOTE:
Before checking the engine oil level, wait a few
minutes until the oil has settled.
EAS20790

CHANGING THE ENGINE OIL

1. Start the engine, warm it up for several
minutes, and then turn it off.
2. Place a container under the engine oil drain
bolt.
3. Remove:
• Lower cowlings
Refer to "GENERAL CHASSIS" on page 4-
1.
4. Remove:
• Engine oil filler cap "1"
• Engine oil drain bolt "2"
(along with the gasket)
ENGINE