Adjusting The Valve Clearance - Yamaha 2012 TMAX XP500A Service Manual

8. Install:
• Spark plug
Spark plug
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
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.
PERIODIC MAINTENANCE
7. Remove:
• Timing mark accessing plug "1"
• Crankshaft end access cover "2"
8. Measure:
• Valve clearance
Out of specification → Adjust.
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)
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
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.
3-5