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CYLINDER HEAD
INSPECTION
Cylinder head
1. Eliminate:
Carbon deposits (from the combustion
chambers)
Use a rounded scraper.
NOTE:
Do not use a sharp instrument to avoid dam-
aging or scratching:
Spark plug threads
Valve seats
2. Inspect:
Cylinder head
Scratches/damage → Replace.
3. Measure:
Cylinder head warpage
Out of specification → Resurface.
Cylinder head warpage:
Less than 0.05 mm (0.002 in)
Warpage measurement and resurface-
ment steps:
Place a straightedge and a feeler gauge
across the cylinder head.
Use a feeler gauge to measure the
warpage.
If the warpage is out of specification,
resurface the cylinder head.
Place a 400 ~ 600 grit wet sandpaper on
the surface plate, and resurface the head
using a figure-eight sanding pattern.
NOTE:
To ensure an even surface rotate the cylin-
der head several times.
ASSEMBLY AND INSTALLATION
1. Install:
Cylinder head
Bolts (1 ~ 4)
Bolt (5)
Nuts (6, 7)
Nuts (8, 9)
NOTE:
Follow the numerical order shown in the illus-
tration. Tighten the bolts and nuts in two
stages.
4 - 29
ENG
44 Nm (4.4 m · kg, 32 ft · lb)
10 Nm (1.0 m · kg, 7.2 ft · lb)
20 Nm (2.0 m · kg, 14 ft · lb)
10 Nm (1.0 m · kg, 7.2 ft · lb)
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