Yamaha FZ6-SS Service Manual page 102

MEASURING THE COMPRESSION PRESSURE
d. If the compression pressure is below the
minimum specification, pour a teaspoonful of
engine oil into the spark plug bore and mea-
sure again.
Refer to the following table.
Compression pressure
(with oil applied into the cylinder)
Reading
Higher than
without oil
Same as without
oil
7. Install:
S spark plug
8. Install:
S spark plug caps
S ignition coils
9. Install:
S heat protector plate
S battery box bracket
S battery box
Refer to "BATTERY BOX AND BATTERY
BOX BRACKET".
S battery
Refer to "CHECKING AND CHARGING THE
BATTERY" in chapter 3.
S air filter case
Refer to "AIR FILTER CASE".
S fuel tank
Refer to "FUEL TANK".
S front cowling inner panel (letf and right)
Refer to "COWLINGS".
S rider seat
Refer to "SEAT".
3-25
CHK
ADJ
Diagnosis
Piston ring(s) wear
or damage !
Repair.
Piston, valves,
cylinder head
gasket or piston
possibly defective
! Repair.
18 Nm (1.8 mSkg, 13 ftSlb)