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4-16
ENG
CYLINDER HEAD
NOTE:
NOTE:
EAS00223
REMOVING THE CYLINDER HEAD
1. Remove:
Scylinder head nuts
1
X
16
SLoosen the nuts in the proper sequence as
shown.
SLoosen each nut 1/2 of a turn at a time. After all
of the nuts are fully loosened, remove them.
EAS00228
CHECKING THE CYLINDER HEAD
The following procedure applies to all of the cyl-
inder heads.
1. Eliminate:
Scombustion chamber carbon deposits
(with a rounded scraper)
Do not use a sharp instrument to avoid damag-
ing or scratching:
Sspark plug threads
Svalve seats
2. Check:
Scylinder head
Damage/scratches ! Replace.
3. Measure:
Scylinder head warpage
Out of specification ! Resurface the cylin-
der head.
Cylinder head warpage
Less than 0.1 mm
a. Place a straightedge
1
and a thickness
gauge
2
across the cylinder head.
b. Measure the warpage.
c. If the limited is exceeded, resurface the cylin-
der head as follows.
d. Place a 400 X 600 grit wet sandpaper on the
surface plate and resurface the cylinder
head using a figure-eight sanding pattern.