CYLINDER
HEADS
3.
Use new head gaskets and clean both :he heads
Remove the cylinder heads for carbon cleaning and and the cylinder block thoroughly where the
gasket change at intervals specified in the Periodic gaskets rest.
Maintenance Schedule (located
in
the Operator's
Manual).
Cylinder Head Installation
1.
1.
Use a
1/2
inch
(13
mm) socket wrench
to
remove
cylinder head bolts or nuts. Lift heads
off.
Torquing or removing cylinder
heads when hot (above
100°F
[37°
C])
will result in head damage. Allow heads to
cool to below
100°
F
(37°
C)
before torquing
or
removing.
2.
2.
After removing heads, clean out all carbon deposits.
Be
careful not to damage the outer sealing edges
where gaskets
fit.
The heads are made of aluminum
and can be damaged by careless handling.
NO.
1
CYLINDER
Place a head gasket on the cylinder block and align
the holes in the gasket with the holes in the cylinder
block. While holding the gasket against the cylinder
head, carefully install the cylinder
head
on the
engine.
Do
not attempt
to
slide the head
bolts
through the gasket without the cylinder block behind
it
or the gasket may tear.
Follow the head torque sequence shown in Figure
28. Tighten all bolts
to
5
ft-lbs
(7
Nm), then
10
ft-lbs
(14
Nm),
then
to
the torque specified in
ASSEMBLY
TORQUES.
Recheck all head bolts for correct
torque.
NO.
2
CYLINDER
C-1002
FIGURE
28.
CYLINDER HEAD TORQUE SEQUENCE
10-1
7
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