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Mercury MerCruiser MCM 7.4L MPI User Manual

Mercury MerCruiser MCM 7.4L MPI
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RISERS SERVICE MANUAL NUMBER 23
Page 7C-8 90-861326--1 MARCH 1999
Cast Iron Elbows With 6 Inch Riser and Mufflers
70481
f
a
b
c
d
e
g
h
k
j
i
l
d
a-Exhaust Elbow 4 In. (101 mm)
b-Muffler Spacer 1-1/4 In. (32 mm)
c-Exhaust Riser 6 In. (152 mm)
d-Open Gasket (4 Slots)
e-Hex Head Screw (4) 1 In. (25 mm)
f-Bolt (8) 7 In. (178 mm) or
Bolt (2) 8 In. (203 mm) (Used Only at Remote Oil Filter Bracket if So Equipped)
g-Exhaust Manifold
h-Drop-Down Bracket (1)
i-Restrictor Gasket
j-Washers (6)
k-Screws (6) 1/2 In. (12 mm)
l-Refer To Note Following
NOTE: Later models will have an open gasket (four slots) instead of a restrictor gasket (two
slots and two holes). If replacing gaskets, it is acceptable to replace the old gaskets with the
open gaskets. Be sure that the same type of gasket is used on both manifolds.
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Mercury MerCruiser MCM 7.4L MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser MCM 7.4L MPI
CategoryEngine
LanguageEnglish

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