Yamaha YZF-R1P Service Manual page 106

ADJUSTING THE VALVE CLEARANCE
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5. Remove:
• camshaft
NOTE:
_
• Refer to "DISASSEMBLING
ENGINE—CAMSHAFT
HEAD" in chapter 5.
• When removing the timing chain and cam-
shafts, fasten the timing chain with a wire to
retrieve it if it falls into the crankcase.
6. Adjust:
• valve clearance
M MMM M MMM M M MMM M M MMM M
a. Remove the valve lifter 1 and the valve pad
2 with a valve lapper 3.
NOTE:
@
• Cover the timing chain opening with a rag to
prevent the valve pad from falling into the
crankcase.
• Make a note of the position of each valve lifter
1 and valve pad 2 so that they can be
installed in the correct place.
b. Select the proper valve pad from the follow-
ing table.
Valve pad
thickness range
Nos. 1.20 ~
120 ~ 240 2.40 mm
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.
CHK
ADJ
THE
AND CYLINDER
M MMM M M MMM M MMM
Available valve pads
25 thicknesses in
0.05 mm
increments