Mercury Mercruiser Tow Sport 5.7 MPI Manual page 72

Section 6 - Storage
5. Pull the lever on the air pump (vertical) to lock the pump on the fitting.
c
b
6. Pump air into the system until both green indicators extend and water drains from both sides of the engine. The port side
will begin draining before the starboard side.
a
b
Closed cooling models
a - Blue drain plug location
b - Blue air pump
c - Air manifold
d - Green indicators
d
Page 64
e
a
c
d
a
b
a -
b -
c -
c
d -
d
21125
d
8293
a
6124
Seawater cooled models
Scorpion models
Blue air pump
Air manifold
Green indicators
Blue drain plug locations
a - Actuator fitting
b - Green indicators
c - Manual release valve
d - Air pump
e - Lever (locking)
c
6125
90-8M0076545 NOVEMBER 2012
eng
b
d