Yamaha FZ6-ST Supplementary Service Manual - Chk
3-12
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:
NOTE:
4. Measure:
Svalve clearance
Out of specification
! Adjust.
Valve clearance (cold)
Intake valve
0.13
X 0.20 mm
(0.0051
X 0.0079 in)
Exhaust valve
0.23
X 0.30 mm
(0.0091
X 0.0118 in)
a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the TDC mark
a
on the
pickup rotor with the crankcase mating sur-
face
b
.
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
c. Measure the valve clearance with a thick-
ness gauge
1
.
SIf the valve clearance is incorrect, record the
measured reading.
SMeasure the valve clearance in the following
sequence.
Valve clearance measuring sequence
Cylinder #1
! #2 ! #4 ! #3
A
Front
d. To measure the valve clearances of the other
cylinders, starting with cylinder #1 at TDC,
turn the crankshaft counterclockwise as spe-
cified in the following table.
B
Degrees that the crankshaft is turned counter-
clockwise
C
Cylinder
D
Combustion cycle
Cylinder #2
180
_
Cylinder #4
360
_
Cylinder #3
540
_