Multi-Point Drain (Mpd) System; Air Actuated Single Point Drain System; Boat In The Water - MerCruiser Sterndrive 4.3 MPI User Manual

Multi-Point Drain (MPD) System

a
a - Water circulating pump hose
b - Fuel cooler to thermostat housing
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.
90-8M0053269 NOVEMBER 2010
b
a
a
6131
b
b
a - Check valve (if equipped)
Section 6 - Storage
a - Side of cylinder block
b - Bottom of exhaust
manifolds
6129
6130
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