Mercury MerCruiser 5.7 Horizon, User Manual

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Section 6 - Storage
90-899883173 DECEMBER 2007 Page 89
THREE POINT MANUAL DRAIN SYSTEM
a
a
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a - Blue drain plug
Air Actuated Single Point Drain System
BOAT IN THE WATER
NOTE: This procedure is written for the blue air pump that is attached to the engine.
However, any air source can be used.
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
2. Remove the blue air pump from the engine.
3. Ensure that the lever on top of the pump is flush with the handle (horizontal).
4. Install the air pump on the actuator fitting.
5. Pull lever on air pump (vertical) to lock pump on the fitting.
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b
d
e
a
c
a - Actuator fitting
b - Green indicators
c - Manual release valve
d - Blue air pump
e - Lever (locking)
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.