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CYLINDER HEAD COVER, CYLINDER HEAD
CHECKING THE PUSH ROD
1.
Check:
• Push rod runout
Runout limit:
0.5 mm (0.02 in)
Out of specifications Replace.
CHECKING THE CYLINDER HEAD
1.
Check:
• Cylinder head combustion chamber
Check the combustion chamber for carbon depos-
its.
Any carbon deposits Eliminate.
TIP
Be sure not to damage the contact surface of the cylinder.
2.
Check:
• Cylinder head
Cracks/damage around the hole of spark plug
Replace.
3.
Measure:
• Cylinder head warpage
TIP
Measure the warpage on the contact surface of the cylin-
der head at six points using the straight edge and thick-
ness gauge.
Feeler gauge set:
YU-26900-9
Thickness gauge:
90890-03268
Warpage limit:
0.05 mm (0.002 in)
Out of specifications Resurface or replace.
3-19
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