Yamaha TMAX XP500F 2015, Service Manual, Page: 100 / 478

PERIODIC MAINTENANCE
3-5
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 (2)” on page
4-8.
EAS30622
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 (2)” on page
4-8.
2. Remove:
• Radiator bracket
Refer to “RADIATOR” on page 6-1.
3. Remove:
• Storage box
Refer to “GENERAL CHASSIS (5)” on page
4-20.
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 7-6.
6. Remove:
• Spark plugs
• Cylinder head cover
• Cylinder head cover gasket
Refer to “CAMSHAFTS” on page 5-10.
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 gen-
erator rotor with the mark “b” on the generator
cover.
TIP
• TDC on the compression stroke can be found
when the cylinder #1 camshaft lobes are
turned away from each other.
• In order to be sure that the piston is at TDC, the
alignment mark “c” on the intake camshaft
sprocket and the alignment mark “d” on the ex-
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)