MerCruiser 350 MAG MPI User Manual

Section 6 - Storage
90-864195070 JUNE 2007 Page 121
5. Pull lever on air pump (vertical) to lock pump on the fitting.
8293
b
d
e
a
c
a - Actuator fitting
b - Green indicators
c - Manual release valve
d - 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.
7. Immediately remove the blue drain plug from the side of the thermostat housing or the
heat exchanger. This must be removed within 30 seconds to properly vent the cooling
system.
6124
a
b
c
d
6125
a
b
c
d
Closed Cooled Models Seawater Cooled Models
a - Blue drain plug location
b - Blue air pump
c - Air manifold
d - Green indicators

MerCruiser 350 MAG MPI Specifications

General

Engine Type	V8
Horsepower	300 HP
Ignition System	Electronic ignition
Alternator	65 amp
Compression Ratio	9.4:1
Displacement	5.7L (350 cu in)
Fuel System	Multi-Point Injection (MPI)
Bore x Stroke	4.00" x 3.48" (101.6mm x 88.39mm)