Suzuki kq750 Service Manual page 35

0B-6 Maintenance and Lubrication:
10) Insert the thickness gauge between the tappet and
the cam. If the clearance is out of specification,
adjust it to the specified range.
NOTE
The valve clearance specification is different
for both intake and exhaust valves.
Special tool
(A): 09900–20803 (Thickness gauge)
Valve clearance (When cold)
IN.: 0.10 – 0.20 mm (0.004 – 0.008 in)
EX.: 0.20 – 0.30 mm (0.008 – 0.012 in)
Adjustment
The clearance is adjusted by replacing the existing
tappet shim with a thicker or thinner shim.
1) Remove the intake or exhaust camshafts. Refer to
"Engine Top Side Disassembly in Section 1D
(Page 1D-17)".
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 2.50 to 3.50
mm in steps of 0.05 mm.
!
Both the right and left valve clearances
should be as closely as possible.
(A)
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
I831G1020015-01
• When seating the tappet shim, be sure the
2
I831G1020016-01
300
CAUTION
top and bottom faces.
figure printed surface faces the tappet.
2
3.00 mm
I831G1020091-01
I718H1020002-02