0B-6 Maintenance and Lubrication:
15) Turn the crankshaft clockwise 360° (one full rotation)
and position the notches “E” on the left end of both
camshafts to the positions as shown in the figure.
16) Measure the clearances of the remaining valves “G”
and adjust them if necessary.
Adjustment
The clearance is adjusted by replacing the existing
tappet shim with a thicker or thinner shim.
1) Remove the intake or exhaust camshaft. Refer to
“Engine Top Side Disassembly in Section 1D
(Page 1D-27)”.
2) Remove the tappet (1) and shim (2) by fingers or
magnetic hand.
3) Check the figures printed on the shim. These figures
indicate the thickness of the shim, as illustrated.
4) Select a replacement shim that will provide a
clearance within the specified range. For the
purpose of this adjustment, a total of 25 sizes of
tappet shim are available ranging from 2.30 to 3.50
mm in steps of 0.05 mm.
5) Fit the selected shim (2) to the valve stem end, with
numbers toward tappet. Be sure to check shim size
with micrometer to ensure its size.
NOTE
• Be sure to apply engine oil to tappet shim
top and bottom faces.
• When seating the tappet shim, be sure the
figure printed surface faces the tappet.
I815H1020014-01
“E”
FWD
I815H1020015-01
FWD
“G”
“G”
“G”
I815H1020016-01
(A)
I815H1020017-01
“F”
“G”
Exhaust camshaft Intake camshaft
FWD
FWD
FWD
FWD
Notch “E” position
Measuring
position
I815H1020049-01
1
2
I815H1020018-01
2.70 mm
I823H1020072-01
2
I718H1020002-02
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