Operation Manual

PERIODIC MAINTENANCE
3-5
8. Install:
• Spark plug
TIP
Before installing the spark plug, clean the
spark plug and gasket surface.
9. Connect:
• Spark plug cap
10. Install:
• Radiator cover
Refer to “GENERAL CHASSIS” on page
4-1.
EAS20490
ADJUSTING THE VALVE CLEARANCE
The following procedure applies to all of the
valves.
TIP
• 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 top dead
center (TDC) on the compression stroke.
1. Remove:
• Radiator cover
Refer to “GENERAL CHASSIS” on page
4-1.
2. Remove:
• Radiator bracket
Refer to “RADIATOR” on page 6-1.
3. Remove:
• Storage box
Refer to “GENERAL CHASSIS” on page
4-1.
4. Remove:
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
5. Remove:
• Air filter case
• Throttle body
• Intake manifold
Refer to “THROTTLE BODY” on page 7-
5.
6. Remove:
• Spark plugs
• Cylinder head cover
• Cylinder head cover gasket
Refer to “CAMSHAFTS” on page 5-8.
7. Remove:
• Timing mark accessing plug “1”
• Crankshaft end access cover “2”
8. Measure:
• Valve clearance
Out of specification → Adjust.
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a. Turn the crankshaft clockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the “I” mark “a” on the
generator rotor with the mark “b” on the
generator cover.
Spark plug
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
Valve clearance (cold)
Intake
0.15–0.22 mm (0.0059–0.0087
in)
Exhaust
0.25–0.32 mm (0.0098–0.0126
in)