Suzuki LT-A450X, Manual

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2-6 PERIODIC MAINTENANCE
• Remove the recoil starter. (
$
3-11)
• Remove the valve timing inspection plug
1
.
INSPECTION
The valve clearance specification is same for both valves. Valve
clearance adjustment must be checked and adjusted, 1) at the
time of periodic inspection, 2) when the valve mechanism is ser-
viced, and 3) when the camshaft is disturbed by removing it for
servicing.
NOTE:
* The piston must be at (TDC) on the compression stroke in
order to check the valve clearance or to adjust valve clear-
ance.
* The clearance specification is for COLD state.
* To turn the crankshaft for clearance checking, rotate in the nor-
mal running direction. The spark plug should be removed.
• Turn the generator rotor until the “TDC” line
A
on the genera-
tor rotor is aligned with the index mark
B
of the generator
cover.
• Insert a thickness gauge between the valve stem end and the
adjusting screw on the rocker arm.
If the clearance is out of specification, bring it into the speci-
fied range with the special tool.
% 09900-20803: Thickness gauge
09917-13210: Valve clearance adjusting driver
& Valve clearance (when cold):
IN: 0.05 – 0.10 mm (0.002 – 0.004 in)
EX: 0.17 – 0.22 mm (0.007 – 0.009 in)
#
" Valve clearance adjuster lock-nut:
10 N·m (1.0 kgf-m, 7.0 lb-ft)
• Install the valve clearance inspection caps. (
$
3-112)
• Install the valve timing inspection plug. (
$
3-113)
• Install the recoil starter. (
$
3-113)
• Install the spark plug. (
$
2-7)
Securely tighten the lock-nut after completing adjust-
ment.
Adjuster
Lock-nut