Suzuki AN400 Service Manual page 32

0B-5 Maintenance and Lubrication:
NOTE
• The clearance specification is for COLD
state.
• To turn the crankshaft for clearance
checking, be sure to use a wrench, and
rotate in the normal running direction.
Spark plug should be removed.
7) In this condition, read the valve clearance at each
valve. If the clearance is out of specification, adjust
the clearance.
Special tool
(A): 09900–20803 (Thickness gauge)
8) Reinstall the removed parts in the reverse order of
removal.
(A)
I705H1020011-02
Adjustment
The clearance is adjusted by replacing the existing
tappet shim by a thicker or thinner one.
1) Remove the intake or exhaust camshaft. Refer to
"Engine Top Side Disassembly in Section 1D
(Page1D-16)".
2) Remove the tappet (1) and shim (2) by fingers or
magnetic hand.
1
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 1.20 to 2.20
mm in steps of 0.05 mm.
5) Fit the selected shim to the valve stem end, with
numbers toward tappet. Be sure to check shim size
with micrometer to ensure its size.
6) Install the camshafts. Refer to "Engine Top Side
Assembly in Section 1D (Page1D-18)".
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I705H1020012-02
I310G1020023-01