Performance Bulletin


Engine: Yamaha XF425USA2
Boat: Heritage 251
Configuration: Single
Test Date: 25-Jun-2019
Heritage 251

Performance Bulletin

50 - Heritage 251

Heritage 251

Length 25' 2"
Beam 9' 2"
Dry Weight (Boat Mfr. Pub) 4,100 lbs
Maximum HP 425 hp
Fuel Capacity 156 gal
Weight as Tested 6,082 lbs

XF425USA2

Horsepower 425 hp
Induction DI/VCT/DOHC
Displacement 5.6L
Weight (Estimated) 977 lbs
Gear Ratio 1.79:1

Engine Mounting Height

Mounting Hole Position #4
Ventilation Plate Height 1" Above Boat Bottom

Propeller(s)

Series XTO Offshore
Diameter x Pitch 16-5/8 x 19
Yamaha Part # 6GR-45974-10-00
Propeller Material Polished Stainless Steel

Test Conditions

Number of People 2
Air / Water Temperature (Fahrenheit) 85° F / 83° F
Elevation (in feet above sea level) 70'
Wind Velocity 0-5 MPH

Comments

Test weight includes 1/2 tank of fuel, 2 people, 2 batteries, safety and test equipment.

YPB#: PB_SPT_Heritage251_XF425USA2_19XTO_6-25-2019-OCC

50 - Heritage 251

Performance Bulletin


Engine: Yamaha XF425USA2
Boat: Heritage 251
Configuration: Single
Test Date: 25-Jun-2019
XF425USA2

Performance Data

RPM
MPH
GPH
MPG
1000 6.0 1.9 3.16
1500 7.6 2.7 2.81
2000 9.1 4.1 2.22
2500 12.9 6.2 2.08
3000 19.9 8.2 2.43
3500 29.3 10.4 2.83
4000 34.4 14.0 2.47
4500 39.5 17.5 2.26
5000 44.8 22.3 2.01
5500 49.1 26.7 1.84
6050 55.3 36.8 1.50

Time to Plane: 4.3 seconds
0-30 MPH: 6.35 seconds

Notice To Consumer The information and data contained in this Performance Bulletin is approximate and subject to many different factors and variables. It is provided as a guideline only and should not be relied upon as representative of actual performance. Your boat’s performance may be different than the information contained in this Performance Bulletin due to various factors, including your boat’s actual weight, wind and water conditions, temperature, humidity, elevation, bottom paint, boat options affecting wind/water drag and/or boat weight, and operator ability. Please confirm the specifications and performance data on your specific boat/engine combination with your dealer prior to purchase. Please also keep in mind that the data contained in this Performance Bulletin may or may not have been performed using Yamaha PowerMatched components. Yamaha reserves the right to change the specifications and performance data of this Performance Bulletin or engine without notice. This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identification purposes only, and are not intended to be an endorsement.