Page 174 - REPOWER REFERENCE GUIDE (2020)

Manifolds, Elbows, and Risers for Wet Joint
Wet Joint MPI Models

i
k

i g

n
f
c e

m
l
d

b j

h a

31543

No riser 76 mm (3 in.) riser 152 mm (6 in.) riser
a - Exhaust manifold
b - Restrictor gasket shown, block‑off gasket for full‑loop closed cooling
c - Exhaust elbow
d - 76 mm (3 in.) riser
e - 152 mm (6 in.) riser
f - Open gasket
g - Plug
h - Manifold to cylinder head bolt and washer
i - Exhaust elbow to exhaust manifold bolt
j - Stud
k - Exhaust elbow to 76 mm (3 in.) riser nut and washer
l - 152 mm (6 in.) riser to exhaust manifold bolt
m - Hose fitting
n - Pipe plug

Removal

! WARNING

Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or
death due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the
battery before maintaining, servicing, installing, or removing engine or drive components.
1. Disconnect both battery cables from the battery.
2. Drain the seawater section of the engine.

Page 7A-4 © 2019 Mercury Marine 90-8M0149179 eng NOVEMBER 2018