3 - 22
CHK
ADJ
MEASURING THE COMPRESSION PRESSURE
WARNING
WARNING
To prevent sparking, ground all spark
plug leads before cranking the engine.
NOTE:
The difference in compression pressure
between cylinders should not exceed
100 kPa (1 kg/cm
2
, 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 minimum specification, squirt a
few drops of oil into the cylinder and
measure again.
Refer to the following table.
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
7. Install:
• spark plug
Compression pressure
(with oil applied into the cylinder)
Reading
Diagnosis
Higher than with-
out oil
Piston wear or
damage
→
Repair.
Same as without
oil
Piston ring(-s),
valve(-s), cylinder
head gasket or
piston possibly
defective
→
Repair.
T
R
.
.
13 Nm (1.3 m · kg, 9.4 ft · lb)
Содержание YZF-R7
Страница 1: ...5FL 28199 E0 YZF R7 OWNER S SERVICE MANUAL ...
Страница 8: ......
Страница 58: ...2 20 SPEC Crankcase tightening sequence TIGHTENING TORQUES ...
Страница 72: ...3 3 CHK ADJ ...
Страница 127: ...3 58 CHK ADJ CHECKING AND CHARGING THE BATTERY Charging method using a variable voltage charger ...
Страница 128: ...3 59 CHK ADJ CHECKING AND CHARGING THE BATTERY Charging method using a constant voltage charger ...
Страница 363: ...8 27 ELEC ...
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Страница 381: ...PRINTED IN JAPAN 98 12 0 5 1 CR PRINTED ON RECYCLED PAPER YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...