Checking The Engine Oil Level; Changing The Engine Oil - Yamaha XG250 Service Manual

Compression pressure (with oil applied into the
cylinder)
Reading
Higher than without oil
Same as without oil
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
7. Install:
Spark plug
●
Spark plug
18 Nm (1.8 m•kg, 13 ft•lb)
8. Connect:
Spark plug cap
●
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 min-
utes, 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.
NOTE:
Before checking the engine oil level, wait a few
minutes until the oil has settled.
b
a
Diagnosis
Piston ring(s) wear or
damage → Repair.
Piston, valves, cylin-
der head gasket or
piston possibly
defective →
Repair.
Type
SAE10W30
SAE15W40
SAE20W50
Recommended engine oil grade
●
API service SE, SF, SG type or
higher
-20 -10
ECA4D601
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 or use engine
oils with a grade of CD "a" or higher and
do not use oils labeled "ENERGY CON-
SERVING II" "b".
Do not allow foreign materials to enter the
●
crankcase.
4. Start the engine, warm it up for several min-
utes, 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.
EAS20810

CHANGING THE ENGINE OIL

1. Start the engine, warm it up for several min-
utes, and then turn it off.
2. Place a container under the engine oil drain
bolt.
3-10
ENGINE
or SAE10W40
or SAE20W40
0 10 20 30 40 50 ßC
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40
SAE 20W-50
or
or