Yamaha WR450F(R) Owner's Service Manual page 87

VALVE CLEARANCE ADJUSTMENT
3 - 22
Round off the last digit of the installed pad
G
number to the nearest increment.
Last digit of pad
number
0, 1 or 2
4, 5 or 6
8 or 9
EXAMPLE:
Installed pad number = 148
Rounded off value = 150
NOTE:
Pads can only be selected in 0.05 mm incre-
ments.
Locate the rounded-off value and the
G
measured valve clearance in the chart
"PAD SELECTION TABLE". The field
where these two coordinates intersect
shows the new pad number to use.
NOTE:
Use the new pad number only as a guide
when verifying the valve clearance adjust-
ment.
Install the new pads 6 and the valve lift-
G
ers 7 .
NOTE:
Apply the engine oil on the valve lifters.
G
Apply the molybdenum disulfide oil on the
G
valve stem ends.
Valve lifter must turn smoothly when
G
rotated with a finger.
Be careful to reinstall valve lifters and
G
pads in their original place.
Install the camshafts (exhaust and intake),
G
the timing chain and the camshaft caps.
Refer to "CAMSHAFTS" section in the
CHAPTER 4.
Bolt (camshaft cap):
10 Nm (1.0 m • kg, 7.2 ft • lb)
INSP
ADJ
Rounded value
0
5
10