Yamaha YZFR1W 2007 Service Manual page 89

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.
Last digit
0 or 2
5
8
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".
Rounded value
0
5
10
NOTE:
• Lubricate the valve pad with molybdenum
disulfide grease.
• Lubricate the valve lifter with molybdenum
disulfide oil.
• The valve lifter must turn smoothly when
rotated by hand.
• Install the valve lifter and the valve pad in the
correct place.
f. Install the exhaust and intake camshafts,
timing chain and camshaft caps.
Camshaft cap bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
NOTE:
• Refer to "CAMSHAFTS" on page 5-9.
• Lubricate the camshaft bearings, camshaft
lobes and camshaft journals.
• First, install the exhaust camshaft.
• Align the camshaft marks with the camshaft
cap marks.
• Turn the crankshaft counterclockwise several
full turns to seat the parts.
g. Measure the valve clearance again.
h. If the valve clearance is still out of specifi-
cation, repeat all of the valve clearance
adjustment steps until the specified clear-
ance is obtained.
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7. Install:
• All removed parts
NOTE:
For installation, reverse the removal proce-
dure. Note the following points.
3-6
ENGINE