Suzuki drz 400E Service Manual page 20

2-6 PERIODIC MAINTENANCE
ADJUSTMENT
The clearance is adjusted by replacing the existing tappet shim
with a thicker or thinner shim.
Remove the intake or exhaust camshafts. (
Remove the tappet and shim by hand or with a magnet. (
3-22)
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 mea-
sure 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.
Install the camshafts as specified. (
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 ro-
tating 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.
For USA
99104-31140: SUZUKI BOND "1207B"
For the other countries
99000-31140: SUZUKI BOND "1207B"
Tighten the cylinder head cover bolts to specification in two
stages.
Cylinder head cover bolt
3-61 to 3-63)
Initial: 10 N·m (1.0 kgf-m, 7.0 lb-ft)
Final: 14 N·m (1.4 kgf-m, 10.0 lb-ft)
3-12)