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2019 Mercury 250R - 20 in. Shaft

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Availability
Brochure
Year
2019
Manufacturer
Mercury
Model
250R - 20 in. Shaft

Overview

Description

The 250R FourStroke pumps out 250 propshaft horsepower. The stout V-8 powerhead provides an astounding 53% increased displacement and up to 40% higher overall bottom-end torque than the legacy two-stroke 250XS it replaces.



Transient spark calibration boosts torque by 7% for unmatched acceleration. Advanced Range Optimization automatically adjusts fuel delivery for up to 10% improvement in cruise-speed fuel efficiency. All of this on 87-octane (90 RON) pump fuel while maintaining a comparable weight to the 250 XS.



Best of all, the new 250R are backed by a three-year factory warranty.

Features
  • Class Leading Performance: Naturally aspirated, 4.6 Liter V-8; 53% higher displacement than the  3.0 Liter 250XS OptiMax.
  • Low Cost of Ownership: 250 rated horsepower on readily available 87 octane (90 RON) pump fuel while maintaining a comparable weight to the legacy two-stroke 250XS.
  • Unmatched Torque: Class-leading 4.6L displacement resulting in 40% more bottom-end torque.
  • Exhilarating Acceleration: Transient spark calibration boosts mid-range torque by as much as 7% for superior acceleration.
  • Enhanced Efficiency: Advanced Range Optimization automatically adjusts fuel delivery for up to 10% improvement in cruise-speed fuel efficiency.
Specifications
  • Rated Horsepower (HP/kW): 250/186
  • Bore & Stroke (in/mm): 3.6 x 3.4/92 x 86
  • Idle RPM: 600
  • Cylinders/Engine Configuration: V-8 (64 degree) with 32-valve Dual Overhead Cam (DOHC)
  • Displacement (Liter/CID): 4.6/279
  • Induction System: Performance-Tuned Long Runner Intake Manifold
  • Fuel System: Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
  • Fuel Requirements: Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON
  • Ignition System: SmartCraft PCM 112 Digital Inductive
  • Charging System: 85-amp (1071 Watt)
  • Starting: Electric Start with SmartStart Protection
  • Lubrication System: Integrated wet sump
  • Oil Requirement: NMMA Certified FCW SAE 10W-30
  • Throttle and Shift Controls: Mechanical
  • Midsection Design: Tri-Ram Midsection with High-Durometer Elastomer Upper Mount and Solid Lower Mounts
  • Shaft Length (in./mm.): 20/508
  • Gearcase: Sport Master
  • Gear Ratio: 1.75:1
  • Weight (Lbs./Kgs.): 520/236
  • Warranty: 3-Year Limited

Specs

Engine

Engine Type
V-8 (64 degree) with 32-valve Dual Overhead Cam (DOHC)
Bore x Stroke
3.6 x 3.4 in. (92 x 86 mm)
Displacement
4.6 L (279 cid)
Starting
Electric Start with SmartStart Protection

Dimensions

Shaft Length
20 in. (508 mm)
Weight
520 lb. (236 kg)

General

Propshaft Horsepower
250 hp (186 kW)
Gear Ratio / Shift
1.75:1
Fuel Induction
Performance-Tuned Long Runner Intake Manifold
Alternator
85-amp (1071 Watt)
Warranty
3-Year Limited

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