Checking The Engine Oil Level - Yamaha XJR1300 2007 Service Manual

Compression gauge
90890-03081
Engine compression tester
YU-33223
Extension
90890-04082
1
6. Measure:
Compression pressure
G
Out of specification → Refer to steps (c) and
(d).
Standard compression pressure
(at sea level)
1050 kPa/400 r/min (149.3 psi/
400 r/min) (10.5 kgf/cm
min)
Maximum compression pressure
1200 kPa/400 rpm (12.00 kgf/
2
cm /400 rpm)
Minimum compression pressure
900 kPa/400 rpm (12.00 kgf/cm
400 rpm)
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Set the main switch to "ON".
b. With the throttle wide open, press the start
button until the reading on the compression
gauge stabilizes.
EWA12940
WARNING
To prevent sparking, ground all spark plug
leads before cranking the engine.
NOTE:
Make use the battery is fully charged when tak-
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ing measurements.
Make sure there is no compression leakage
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from the connecting section of the compres-
sion gauge.
The difference in compression pressure be-
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tween cylinders should not exceed 100 kPa (1
2
kg/cm , 14 psi).
2
2
/400 r/
2
/
3-12
c. If the compression pressure is above the
maximum specification, check the cylinder
head, valve surfaces and piston crown for
carbon deposits.
Carbon deposits → Eliminate.
d. If the compression pressure is below the min-
imum specification, pour a teaspoonful of en-
gine oil into the spark plug bore and measure
again.
Refer to the following table.
Compression pressure (with oil applied into the
cylinder)
Reading
Higher than without oil
Same as without oil
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7. Install:
Spark plug
G
Spark plug
18 Nm (1.8 m•kg, 13 ft•lb)
8. Connect:
Spark plug cap
G
EAS20730

CHECKING THE ENGINE OIL LEVEL

1. Stand the vehicle on a level surface.
NOTE:
Place the vehicle on a center stand.
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Make sure the vehicle is upright.
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2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Check:
Engine oil level
G
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.
Type
SAE10W30 or SAE10W40 or
SAE15W40 or SAE20W40 or
SAE20W50
Recommended engine oil grade
API service SG type or higher,
JASO standard MA
ENGINE
Diagnosis
Piston ring(s) wear or
damage → Repair.
Piston, valves, cylinder
head gasket or pis-
ton possibly defec-
tive → Repair.