Checking the cylinder head bolt
1. Measure:
• Cylinder head bolt (M9) diameter
Out of specification Replace.
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a. Measure the diameters "a" and "b" of the
cylinder head bolt (M9) at the specified
measuring points "c" and "d".
d
Cylinder head bolt (M9) diameter
difference limit
"a" – "b" = Less than 0.13 mm
(0.01 in)
Measuring point "c": 10.0 mm
(0.39 in)
Measuring point "d": 62.5 mm
(2.46 in)
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Installing the cylinder head
Before installing the cylinder head, check the
cylinder head bolts. See "Checking the cylinder
head bolt" (7-28).
1. Check that the hole "a" on the retaining
plate is aligned with the "△" mark "b" on
the cylinder block.
b
a
c
b
a
7-28
2. Install:
• Dowel pin
• Cylinder head gasket
• Cylinder head
3. Tighten:
• Cylinder head bolt (M9)
• Cylinder head bolt (M6)
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a. Tighten the cylinder head bolts (M9) "1" to
the specified torques in 3 stages and in the
order [1], [2], and so on.
TIP:
In the third tightening stage for the cylinder
head bolts (M9) "1", mark the bolts and cylinder
head with identification marks "a", and then
tighten the bolts 90 from the marks on the cyl-
inder head.
b. Tighten the cylinder head bolts (M6) "2" to
the specified torques in 2 stages and in the
order [9], [10], and so on.
[8]
[12]
90°
a
[10]
[4]
[9]
2
[1]
[11]
[5]
Cylinder head bolt (M9) "1" [1]–[8]
1st: 17 N·m (1.7 kgf·m, 13 lb·ft)
2nd: 34 N·m (3.4 kgf·m, 25 lb·ft)
3rd: 90
Cylinder head bolt (M6) "2" [9]–
[12]
1st: 6 N·m (0.6 kgf·m, 4.4 lb·ft)
2nd: 12 N·m (1.2 kgf·m, 8.9 lb·ft)
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Cylinder head
New
1
[7]
[3]
[2]
[6]