Section 4 - Specifications
90-864197084 NOVEMBER 2008 Page 81
Axius 377 MAG, Axius SeaCore 377 MAG with Emissions Control
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.
Propshaft power
293 kW (320 hp)
Displacement
6.2 L (377 cid)
Alternator amperage
Hot 72 A
Cold 65 A
RPM
WOT 4800–5200
Rev limiter 5350
Idle in neutral 550
Minimum oil pressure
At 2000 RPM 124 kPa (18 psi)
At idle 41 kPa (6 psi)
Thermostat
Seawater‑cooled models 71° C (160° F)
MPI models with 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
AC Platinum (AC 41‑993)
Spark plug gap
1.5 mm (0.060 in.)
Fluid Specifications
IMPORTANT: All capacities are approximate fluid measures.
Engine
IMPORTANT: It may be necessary to adjust oil levels depending on installation angle and cooling systems (heat exchanger and
fluid lines).
Always use the dipstick to determine the exact quantity of oil or fluid required.
All Models Capacity Fluid Type
Engine oil (with filter)
4.25 liters
(4.5 U.S. qt.)
Mercury/Quicksilver Synthetic Blend MerCruiser Engine Oil
25W‑40
Seawater cooling system
(winterization use only)
20 liters (21 U.S. qt.) Propylene Glycol and Purified Water
Closed cooling system 19 liters (20 U.S. qt.)
Mercury Extended Life Coolant/Antifreeze or Extended Life
Ethylene Glycol 5/100 Coolant/Antifreeze mixed 50/50 with
Purified Water
Sterndrive—Bravo
NOTE: Oil capacity includes gear lube monitor.
Model
Capacity Fluid Type
Bravo Three with dual water pickups 2736 mL (92‑1/2 oz)
High Performance Gear Lubricant
Bravo Three with side water pickups only 2972 mL (100‑1/2 oz)
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