Yamaha MX775 - Cylinder Heads Decarbonization

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5
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PERIODIC CHECKS AND ADJUSTMENTS
PERIODIC MAINTENANCE
g. Install the rocker arm “5”.
(Refer to “CYLINDER HEAD COVERS, CYLINDER
HEADS” on page 3-20)
TIP
• Lubricate the rocker arm with engine oil.
• Turn the crankshaft clockwise several full turns to seat
the parts.
h. Measure the valve clearance again.
i. If the valve clearance is still out of specification,
repeat all of the valve clearance adjustment steps
until the specified clearance is obtained.
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7. Install:
• Cylinder head cover gasket
• Cylinder head cover
• Cylinder head cover bolts
• Spark plug
• Spark plug cap
CYLINDER HEADS DECARBONIZATION
1. Remove:
• Cylinder heads
(Refer to “CYLINDER HEAD COVERS, CYLINDER
HEADS” on page 3-20)
2. Eliminate:
• Carbon deposits
(Refer to “CHECKING THE CYLINDER HEADS” on
page 3-24)
3. Install:
• Cylinder heads
(Refer to “INSTALLING THE CYLINDER HEAD
ASSEMBLY” on page 3-25)
5
Rocker arm shaft bolt:
4.0 N·m (0.40 kgf·m, 2.9 lb·ft)
T
R
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Cylinder head cover bolt:
11 N·m (1.1 kgf·m, 8.0 lb·ft)
Spark plug:
20 N·m (2.0 kgf·m, 14 lb·ft)
New
T
R
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T
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