Adjusting The Valve Clearance - Yamaha YZF-R6 99 Service Manual

ADJUSTING THE VALVE CLEARANCE

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5. Remove:
S timing chain tensioner
S timing chain guide (exhaust side)
S camshaft cap
S timing chain
(from the camshaft sprockets)
S intake camshaft
S exhaust camshaft
NOTE:
S Refer to "CAMSHAFTS" in chapter 4.
S 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:
S valve clearance
a. Remove the valve lifter 1 and the valve pad
2 .
NOTE:
S Cover the timing chain opening with a rag to
prevent the valve pad from falling into the
crankcase.
S 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
Nos.
1.20
120
2.40 mm
240
NOTE:
S The thickness a of each valve pad is marked
in hundredths of millimeters on the side that
touches the valve lifter.
S 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.
CHK
ADJ
Available valve
pads
25 thicknesses in
0.05 mm incre-
ments