User Guide

3-13
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:
NOTE:
NOTE:
5. Remove:
S camshafts
S Refer to “CAMSHAFTS” in chapter 5.
S When removing the timing chain and 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
with a valve lapper
3
.
Valve lapper
90890-04101
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
thickness range
Available valve
pads
Nos.
120 X
240
1.20
(0.0472) X
2.40 mm
(0.0945 in)
25 thicknesses in
0.05 mm (0.002 in)
increments
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.