MerCruiser 5.7 MPI User Manual

Section 6 - Storage
Page 78 90-864197072 NOVEMBER 2007
MULTI-POINT DRAIN (MPD) SYSTEM
10226
M110050
93235672
b
a
a
b
6129
a - Side of cylinder block b - Bottom of exhaust manifolds
a
b
6130
a - Water circulating pump hose b - Fuel cooler to thermostat housing
a
6131
a - Check valve (if equipped)
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.

MerCruiser 5.7 MPI Specifications

General

Engine Type	V8
Fuel System	Multi-Port Fuel Injection (MPI)
Horsepower	300 HP
Ignition	Electronic
Cylinders	8
Fuel Type	Gasoline
Alternator	65 amp
Compression Ratio	9.4:1
Fuel Requirement	87 octane (minimum)
Displacement	5.7L (350 cu in)
Max RPM	5000 RPM