Mercury MerCruiser MCM 454 Mag MPI Service Manual page 831

SEAWATER COOLED MODELS
Transom Mounted
1. Seal the inside edges of the 1-1/2 in. (38 mm) hole hose nipple.
2. Be certain hose nipple and plastic plug are in place and threads have been sealed with
Loctite Pipe Sealant with Teflon prior to tightening each securely.
NOTE: Use a sharp knife or wood chisel to remove excess plastic plug material so that plug
is flush with pickup casting.
3. Position one flat washer and one rubber O-ring on each 5/16 in. x 4 in. (102 mm) long,
round head bolt as shown. Coat each bolt shaft with silicone sealant or equivalent.
Index
Page 6A-6
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a - Hose Nipple
b - Nut (4)
c - Gasket - Between Pickup and Transom
d - O-Ring (4)
e - Washer (4)
f - Bolt (4)
g - Plastic Pug
h - Pickup
i - Screen
j - Screw (2)
a
b
c
d
e
g
h
i
j
SERVICE MANUAL NUMBER 23
f
72640
90-861326--1 MARCH 1999