Mercury MerCruiser MCM 454 Mag MPI

COLLECTORS
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 7D-5
Thru-Transom Exhaust
Shutter Replacement
IMPORTANT: A block off plate must be installed when using thru-transom exhaust
or below swim platform kits.
22057
a
b
a-Block Off Plate
b-Bolts (4)
1. Remove exhaust hose clamps, then hose.
2. Chisel rivets away from both support members.
27761
a
b
c
d
c
d
a-Shutter Hinge
b-Water Shutter - Opens Toward Outside Of Boat
c-Support Member
d-Rivets (4)
3. Install new shutter as shown in “Component Replacement” following. Tighten screws
and nut securely.
4. Reinstall exhaust hose. Tighten clamps securely.
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