Yamaha 2004 YP400, Руководство по обслуживанию, Страница: 91 / 417

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CHK
ADJ
ADJUSTING THE VALVE CLEARANCE
b. Select the proper valve pad from the follow-
ing table.
NOTE:
_
• The thickness
a
of each valve pad is
marked in hundredths of millimeters on the
side that touches the valve lifter.
• Since valve pads of various sizes are origi-
nally installed, the valve pad number must be
rounded in order to reach the closest equiva-
lent to the original.
c. Round off the original valve pad number
according to the following table.
EXAMPLE:
Original valve pad number = 148 (thickness =
1.48 mm (0.058 in))
Rounded value = 150
d. Locate the rounded number of the original
valve pad and the measured valve clear-
ance in the valve pad selection table. The
point where the column and row intersect is
the new valve pad number.
NOTE:
_
The new valve pad number is only an approxi-
mation. The valve clearance must be mea-
sured again and the above steps should be
repeated if the measurement is still incorrect.
e. Install the new valve pad
1
and the valve
lifter
2
.
Valve pad thick-
ness range
Available valve
pads
Nos.
120 ~ 240
1.20 ~
2.40 mm
(0.0472 ~
0.0945 in)
25 thicknesses in
0.05 mm (0.002 in)
increments
Last digit Rounded value
0 or 2 0
5 5
8 10
1
2