Mercury 4.3 MPI SeaCore User Manual

Section 3 - Specifications
Page 40 90-8M0113859 eng DECEMBER 2015
Thermostat
Seawater cooled 60 °C (140 °F)
Closed cooling 77 °C (170 °F)
Firing order
1‑6‑5‑4‑3‑2
Minimum battery rating
Non‑DTS models 750 CCA, 950 MCA, 180 Ah
Spark plug type
Factory installed AC Platinum (AC 41‑101)
Service NGK (ITAR4A15)
Spark plug gap
1.5 mm (0.060 in.)
Emission control system
Electronic control (EC), heated oxygen sensor
(HO2S), catalyst
5.0 MPI ECT and SeaCore 5.0 ECT
NOTE: Performance specifications are obtained and corrected in accordance with SAE J1228/ISO 8665 Crankshaft Power.
All measurements are taken with the engine at normal operating temperature.
RPM range is measured using an accurate service tachometer with the engine at normal operating temperatures.
Oil pressure must be checked with the engine at normal operating temperature.
NOTE: Oil pressure specifications are for reference and may vary.
IMPORTANT: Do not mix spark plug types in an engine. All spark plugs should have the same part number.
Propeller shaft power
194 kW (260 hp)
Displacement
5.0 L (305 cid)
Alternator amperage
Hot 72 A
Cold 65 A
RPM
WOT 4600–5000
Rev limiter 5150
Idle in neutral 550 (not adjustable)
Idle in gear 600 (not adjustable)
Minimum oil pressure
At 2000 RPM 124 kPa (18 psi)
At idle 41 kPa (6 psi)
Thermostat
Seawater cooled 71 °C (160 °F)
Closed cooling 77 °C (170 °F)
Timing at idle
Not Adjustable
Firing order
1‑8‑4‑3‑6‑5‑7‑2
Minimum battery rating
Non‑DTS models 750 CCA, 950 MCA, 180 Ah
DTS models 800 CCA, 1000 MCA, 190 Ah
Spark plug type
Factory installed AC Platinum (AC 41‑101)
Service NGK (ITAR4A15)
Spark plug gap
1.5 mm (0.060 in.)
Emission control system
Electronic control (EC), heated oxygen sensor
(HO2S), catalyst
Fluid Specifications
IMPORTANT: All capacities are approximate fluid measures.
Engine
IMPORTANT: It may be necessary to adjust fluid levels depending on installation angle, cooling system, and fluid lines.
Always use the dipstick to determine the exact quantity of oil or fluid required.

Mercury 4.3 MPI SeaCore Specifications

General

Brand	Mercury
Model	4.3 MPI SeaCore
Category	Engine
Language	English