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Mercury 305 CID - (MCM) Stern Drive Drain Location

Mercury 305 CID
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SEAWATER COOLING MODELS - 6A-1590-823225--1 1096
(MCM) Stern Drive Drain Location
1. Follow instructions “a” or “b”:
a. Alpha equipped models: Insert a small wire
(repeatedly) to make sure that vent holes and
water drain holes and passages (as shown)
are unobstructed and open.
b
c
d
a
71216
e
f
70134
c
f
a - Speedometer Pitot Tube
b - Trim Tab Cavity Vent Hole
c - Trim Tab Cavity Drain Passage
d - Gear Housing Water Drain Hole (One Each - Port and
Starboard)
e - Gear Housing Cavity Vent Hole
f - Gear Housing Cavity Drain Hole
b. Bravo Drive Equipped Models: Insert a
small wire (repeatedly) to make sure that
speedometer pitot tube, trim tab cavity vent
hole, and trim tab cavity drain passage are
unobstructed and open.
71217
b
c
a
a - Speedometer Pitot Tube
b - Trim Tab Cavity Vent Hole
c - Trim Tab Cavity Drain Passage
c. After cooling system has been drained com-
pletely, install and tighten securely all drain
plugs. Reconnect all hoses and tighten all
hose clamps securely.
2. Remove belt driven seawater pump inlet hose as
shown (if so equipped).
72532
b
a
a - Seawater Pickup Pump
b - Seawater Inlet Hose

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