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Performance Bulletin


Engine: Yamaha XF425XSA2 / LXF425XSA2
Boat: Sportsman Open 312
Configuration: Twin
Test Date: 8-Sep-0218
Sportsman® - Sportsman Open 312

Performance Bulletin

50 - Sportsman Open 312

Sportsman Open 312

Length 31' 2"
Beam 10' 2"
Dry Weight (Boat Mfr. Pub) 6,800 lbs
Maximum HP 850 hp
Fuel Capacity 240 gal
Weight as Tested 10,844 lbs

XF425XSA2 / LXF425XSA2

Horsepower 425 hp
Induction DI/VCT/DOHC
Displacement 5.6L
Weight (Estimated) 952 lbs
Gear Ratio 1.79:1

Engine Mounting Height

Mounting Hole Position #4
Ventilation Plate Height 2" Above Boat Bottom

Propeller(s)

Series XTO Offshore
Diameter x Pitch 16-3/8 x 21
Yamaha Part # 6GR-45976-00-00 / 6GS-45976-00-00
Propeller Material Polished Stainless Steel

Test Conditions

Number of People 4
Air / Water Temperature (Fahrenheit) 90° F / 88° F
Elevation (in feet above sea level) 0'
Wind Velocity 5-10 MPH

Comments

Test weight inlcudes 200 gallons of fuel, 4 people, 3 batteries, safety and test equipment.

YPB#: PB_SPT_312Open_T_XF425XSA2_9-9-2018_OCC

Sportsman® - Sportsman Open 312

Performance Bulletin


Engine: Yamaha XF425XSA2 / LXF425XSA2
Boat: Sportsman Open 312
Configuration: Twin
Test Date: 8-Sep-0218
XF425XSA2 / LXF425XSA2

Performance Data

RPM
MPH
GPH
MPG
1000 6.0 4.0 1.50
1500 8.0 5.5 1.45
2000 10.2 9.1 1.12
2500 16.0 12.2 1.31
3000 26.7 16.8 1.59
3500 33.5 21.7 1.54
4000 39.5 28.4 1.39
4500 46.0 37.0 1.24
5000 52.0 46.3 1.12
5500 57.0 61.0 0.93
6100 63.0 71.0 0.89

Time to Plane: 4.00 seconds<br /> 0-30 MPH: 5.13 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.