MerCruiser 3.0 MPI User Manual

Section 2 - Getting to Know Your Power Package
Page 28 90-899883272 MARCH 2008
Four fuses protect the main power, fuel pump, ignition, and accessory circuits. Two 10 amp
fuses protect the O
2
sensors. These are located on the top of the engine underneath the
engine information plate.
a
b
32638
a - O
2
sensor fuses
b - Main power, fuel pump, ignition, and accessory fuses
A 90 amp fuse is located on the large post of the starter solenoid. This fuse protects the
engine wiring harness.
mc74907-1
A 15 amp accessory fuse protects the accessory circuits. This fuse is located on the rear
of the engine.
a
b
c
32206
a - Fuse cover
b - 5 amp fuse
c - Power harness

MerCruiser 3.0 MPI Specifications

General

Horsepower	135 hp (101 kW)
Ignition	Electronic
Cylinders	4
Aspiration	Naturally Aspirated
Compression Ratio	9.3:1
Full Throttle RPM	4400-4800 RPM
Displacement	3.0L / 181 CID
Fuel System	Multi-Port Injection (MPI)
Bore x Stroke	4.00" x 3.60" (101.6mm x 91.4mm)
Fuel Requirement	87 Octane Minimum
Engine Type	Inline 4
Cooling System	Raw water
Alternator Output	65 amp