Checking The Engine Oil Level - Yamaha FJR13AEV(C) Service Manual

Standard compression pressure
(at sea level)
1600 kPa/400 r/min (228 psi/400
r/min) (16.0 kgf/cm²/400 r/min)
Minimum–maximum
1390–1790 kPa (197.7–254.6 psi)
(13.9–17.9 kgf/cm²)
M MMM M MMM M M MMM M M MMM M
a. Set the main switch to "ON".
b. With the throttle wide open, crank the engine
until the reading on the compression gauge
stabilizes.
NOTE:
The difference in compression pressure be-
tween cylinders should not exceed 100 kPa (1
kg/cm², 14 psi).
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
L LLL L LLL L L LLL L L LLL L
8. Install:
• Spark plug
Spark plug
13 Nm (1.3 m·kg, 9.4 ft·lb)
9. Connect the all spark plug caps.
10.Install:
• T-bar
Refer to "GENERAL CHASSIS" on page 4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
M MMM M M MMM M MMM
Diagnosis
Piston ring(s) wear or
damage → Repair.
Pistons, valves, cylin-
der head gasket or
piston ring(s) possi-
bly defective → Re-
pair.
L LLL L L LLL L LLL
3-14
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
EAS20750

CHECKING THE ENGINE OIL LEVEL

1. Stand the vehicle on a level surface.
NOTE:
• Place the vehicle on the centerstand.
• 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.
Type
YAMALUBE 4 (20W40) or
SAE20W40
Recommended engine oil grade
API service SE, SF, SG type or
higher
ECA13380
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.
NOTE:
• API Service "SE", "SF" and "SG" type or equiv-
alent (e.g., "SF-SE", "SF-SE-CC", "SF-SE-
SD")
• Before checking the engine oil level, wait a few
minutes until the oil has settled.
ENGINE