Yamaha YZF-R6, Service Manual

Page: 82 / 425

3-13
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:
NOTE:
NOTE:
5. Remove:
timing chain tensioner
timing chain guide (exhaust side)
camshaft cap
timing chain
(from the camshaft sprockets)
intake camshaft
exhaust camshaft
Refer to “CAMSHAFTS” in chapter 4.
When removing the timing chain from cam-
shafts, fasten the timing chain with a wire to re-
trieve it if it falls into the crankcase.
6. Adjust:
valve clearance
a. Remove the valve lifter 1 and the valve pad
2 .
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 thick-
ness range
Available valve
pads
Nos.
120
240
1.20
2.40 mm
25 thicknesses in
0.05 mm incre-
ments
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 originally
installed, the valve pad number must be
rounded in order to reach the closest equiva-
lent to the original.