Multi-Point Drain (Mpd) System; Air Actuated Single Point Drain System; Boat In The Water - MerCruiser Black Scorpion User Manual

Section 6 - Storage

MULTI-POINT DRAIN (MPD) SYSTEM

a

Air Actuated Single Point Drain System

BOAT IN THE WATER

NOTE: This procedure is written for the 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 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.
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b
a
a - Side of cylinder block
a - Water circulating pump hose
a
a - Check valve (if equipped)
b
a
b - Bottom of exhaust manifolds
b
b - Fuel cooler to thermostat housing
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