Checking The Engine Oil Level - Yamaha FZ1-N 2007 Service Manual

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
ECA13340
CAUTION:
Before removing the spark plugs, use com-
pressed air to blow away any dirt accumu-
lated in the spark plug wells to prevent it
from falling into the cylinders.
4. Install:
• Compression gauge "1"
• Extension
Compression gauge
90890-03081
Engine compression tester
YU-33223
5. Measure:
• Compression pressure
Out of specification → Refer to steps (c)
and (d).
Compression pressure (at sea
level)
Minimum
1290 kPa (12.90 kg/cm
bar, 183.5 psi)
Standard
1480 kPa (14.80 kg/cm
bar, 210.5 psi)
Maximum
1660 kPa (16.60 kg/cm
bar, 236.1 psi)
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Set the main switch to "ON".
b. With the throttle wide open, crank the
engine until the reading on the compres-
sion gauge stabilizes.
EWA5D01004
WARNING
To prevent sparking, ground all spark plug
leads before cranking the engine.
email: info@motomatrix.co.uk
NOTE:
The difference in compression pressure
between cylinders should not exceed 100 kPa
(1 kg/cm², 1 bar, 14.22 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
minimum specification, pour a teaspoonful
of engine oil into the spark plug bore and
measure again.
Refer to the following table.
Compression pressure (with oil applied into
the cylinder)
Higher than without
oil
Same as without oil
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6. Install:
• Spark plug
7. Install:
2
,12.90
• Ignition coils
EAS20730

CHECKING THE ENGINE OIL LEVEL

2
,14.80
1. Stand the vehicle on a level surface.
NOTE:
• Place the vehicle on a suitable stand.
2
, 16.60
• 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.
3-11
Reading
Piston ring(s) wear or
damage → Repair.
Piston, valves, cylin-
der head gasket or
piston possibly defec-
tive → Repair.
Spark plug
13 Nm (1.3 m·kg, 9.4 ft·lb)
ENGINE
Diagnosis