2. MAINTENANCE INFORMATION
2-4
Spark Plug
Recommended spark plug: CR8E
Remove the spark plug cap.
Clean the dirt around the spark plug hole.
Remove the spark plug.
Measure the spark plug gap.
Spark plug gap：0.8 mm
Carefully bend ground electrode of the plug to
adjust the gap if necessary.
Hold the spark plug washer and install the spark
plug by screwing it.
Tighten the plug by turning 1/2 turn more with plug
socket after installed.
Tighten torque: 1.0~1.2kgf-m
Valve Clearance
Caution
Checks and adjustment must be performed when
the engine temperature is below 35℃.
Remove front fender, fuel tank cover and fuel tank.
Remove cylinder head cover.
Remove cylinder head side cover.
Turn camshaft bolt in C.W. direction and let the “T”
mark on the camshaft sprocket align with cylinder
head mark so that piston is placed at TDC position
in compression stroke.
Caution
Do not turn the bolt in C.C.W. direction to prevent
camshaft bolt looseness.
Valve clearance inspection and adjustment
Check & adjust valve clearance with feeler gauge.
Standard Value: IN 0.10 ± 0.02 mm
EX 0.15 ± 0.02 mm
Loosen fixing nut and turn the adjustment nut for
adjustment.
Caution
Re-check the valve clearance after tightened the
fixing nut.
To this chapter contents
2 bolts
Timing mark
0.8~0.9mm
Ground electrode
Central electrode
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