PERIODIC MAINTENANCE 2-7
ADJUSTMENT
The clearance is adjusted by replacing the existing tappet shim
with a thicker or thinner shim.
• Remove the intake or exhaust camshafts. (#3-10)
• Remove the tappet and shim by hand or with a magnet.
(#3-19)
• Check the numbers printed on the tappet shim. These num-
bers indicate the thickness of the tappet shim, as illustrated.
• Select a replacement tappet shim that will provide the proper
clearance. Tappet shims are available in 25 sizes, ranging
from 2.30 to 3.50 mm (0.09 to 0.14 in) in increments of 0.05
mm (0.002 in). Install the selected shim
1 at the valve stem
end, with the numbers facing towards the tappet. Be sure to
measure the shim with a micrometer to ensure that it is of the
proper size.
Refer to the tappet shim selection table for details.
NOTE:
* Be sure to apply molybdenum oil solution to the top and bot-
tom faces of the tappet shim.
* When installing the tappet shim, make sure that the side with
the numbers face towards the tappet.
!
• After replacing the tappet shim and camshafts, rotate the
crankshaft so that the tappet is depressed fully (this will
squeeze out any oil trapped between the tappet shim and the
tappet that could cause an incorrect measurement). After
rotating the crankshaft, check the tappet clearance again to
make sure that it is within specification.
• When installing the cylinder head cover, apply SUZUKI BOND
“1207B” to the cam end caps of the cylinder head cover gas-
ket.
& 99104-31140: SUZUKI BOND “1207B” (USA)
& 99000-31140: SUZUKI BOND “1207B” (Others)
• Tighten the cylinder head cover bolts to the specified torque.
" Cylinder head cover bolt: 14 mm (1.4 kgf-m, 10.0 lb-ft)
280
2.80 mm
Install the camshafts as specified. (#3-60)
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