Dual Water Pick‑up Flush Gearcase Seal
Kit
91‑881150K 1
Blocks off the front water inlet holes on the dual water inlet gearcases.
Engine and Tune‑Up Specifications
Notes on Engine Specifications
• Performance specifications are obtained and corrected in accordance with SAE J1228 (crankshaft power) and ISO 8665
(standard 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.
• 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.
6.2 MPI ECT and 6.2 MPI Non‑ECT
Crankshaft power
224 kW (300 hp) Sterndrive/Inboard only
238 kW (320 hp) TowSport only
261 kW (350 hp) Sterndrive/Inboard only
275 kW (370 hp) TowSport only
Displacement
6.2 L (377 cid)
Alternator
amperage
Hot 72 A
Cold 65 A
RPM
WOT operating range 5000–5400
Rev limiter 5550
Idle in neutral 625—not adjustable
Idle in gear 650—not adjustable
Minimum oil
pressure
At 2000 RPM 124 kPa (18 psi)
At idle 41 kPa (6 psi)
Thermostat
Seawater‑cooled models 60° C (140° F)
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
800 CCA, 1000 MCA, 190 Ah
Spark plug type
Factory installed NGK BPR5EFS‑13
Spark plug gap
1.30 mm (0.051 in.)
Emission control system (ECT models)
Electronic control (PCM112), wideband sensor (HO2S), catalyst
Fluid Specifications
Engine
IMPORTANT: It may be necessary to adjust the oil levels depending on the installation angle of the engine and the type of
cooling system—the heat exchanger and the fluid lines, on the engine.
NOTE: Measure the oil level with the boat in the water.
NOTE: All capacities listed are approximate fluid measures.
Maintenance
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 1C-3
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