Mercury MerCruiser D2.8L D-Tronic Service Manual page 257

SERVICE MANUAL NUMBER 22
IMPORTANT: There is limited space between the cylinder heads after installation. IF
all heads were removed, start installation with cylinder number 1 and proceed in
numerical order. Ensure that when placed on cylinder block each head and
corresponding gasket are properly positioned. Align using a straight edge placed
alongside the head and gasket (Port-to-Starboard) until NO PORTION of the gasket
FIRE RING metal is visible, prior to HAND tightening 12 mm Cylinder Head Bolts (as
in the following steps).
The following steps must be carried out properly to prevent misalignment of
cylInder heads or head gaskets which could result in failure of the cylinder head
gaskets or cylinder heads causing severe engine damage.
5. Beginning with cylinder number 1, with gasket facing UP (as previously shown) install
new cylinder head gasket and cylinder head, being certain that NO PORTION of the
cylinder head gasket FIRE RING metal as shown, is visible or extends out from under
the head. Refer to preceding IMPORTANT precaution.
90-860074--1 FEBRUARY 2002
a
a
a - Cylinder Head Gasket FIRE RING Metal
a - Cylinder Head
b - Cylinder Head Gasket (NO FIRE RING metal visible)
CAUTION
a
b
ENGINE MECHANICAL
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