Locating And Installing The Sterndrive (Mcm) Exhaust System - Mercury MerCruiser D2.8L D-Tronic Service Manual

MANIFOLDS, ELBOWS AND RISERS
Locating and Installing The Sterndrive (MCM) Exhaust
System
IMPORTANT: It is the responsibility of the boat manufacturer, or installing dealer, to
properly locate the engine and install the exhaust system. Improper installation may
allow water to enter the exhaust manifolds and combustion chambers and severely
damage the engine. Damage caused by water in the engine will not be covered by
Mercury MerCruiser Warranty, unless this damage is the result of defective parts.
Determine if an exhaust riser kit or a water lift muffler kit is required, by taking measurements
"a"
"a"
The Sterndrive (MCM) engine is equipped with a factory installed exhaust riser. Verify
that the riser provides the required dimension "c", or a distance greater than "c", as
indicated.
All Models
Typical Sterndrive (MCM) Engine
Page 7B-8
and "b", with boat at rest in the water and maximum load aboard. Subtract
to find "c". If "c" is less than specified in chart, an exhaust riser kit must be installed.
Model
a - From Waterline To Top Of Transom
b - From Highest Point On Exhaust Elbow To Top Of Transom
c - From "a" Minus "b"
d - Waterline At Rest
"c"
"c" Must Be 11 in. (279 mm) or More
b
b
d d
c
c
SERVICE MANUAL NUMBER 22
= "a" Minus "b"
a
a
90-860074--1 FEBRUARY 2002
"b" from
74298