Service manual

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CHK
ADJ
ADJUSTING THE VALVE CLEARANCE
EAS00048
ENGINE
ADJUSTING THE VALVE CLEARANCE
The following procedure applies to all of the
valves.
NOTE:
_
• Valve clearance adjustment should be made
on a cold engine, at room temperature.
• When the valve clearance is to be measured
or adjusted, the piston must be at the Top
Dead Center (TDC) on the compression
stroke.
1. Remove:
• seat
• fuel tank cover
• side covers (left and right)
• fuel tank
Refer to “SEAT, FENDERS AND FUEL
TANK”.
2. Remove:
• ignition coil
1
• oil tank breather hose
2
• cylinder head breather hose
3
• spark plug
• cylinder head cover
4
3
4
2
1
3. Remove:
• timing mark accessing screw
1
• crankshaft end accessing screw
2
4. Measure:
• valve clearance
Out of specification
→
Adjust.
Valve clearance (cold)
Intake valve
0.10 ~ 0.15 mm
(0.0039 ~ 0.0059 in)
Exhaust valve
0.20 ~ 0.25 mm
(0.0079 ~ 0.0098 in)
1
2