7-30
Cylinder head
0
1
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A
Make sure to keep the parts in the order of
removal.
3. Remove the valve seals d.
Checking the cylinder head
1. Remove carbon deposits from the com-
bustion chamber, and then check the cyl-
inder head for corrosion or scratches.
2. Check the cylinder head warpage in 6
directions. Replace the cylinder head
assembly if above specification.
Checking the rocker arm
1. Check the rocker arms. Replace if
cracked, damaged, or worn.
Checking the push rod
1. Measure the push rod runout.
Checking the valve spring
1. Measure the valve spring free length a.
Valve spring compressor b:
90890-04019
Valve spring compressor attachment c:
90890-06320
d
d
Cylinder head warpage limit:
0.10 mm (0.0039 in)
Push rod runout: 0.5 mm (0.02 in)
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