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Performance Bulletin


Engine: Yamaha F300XCB2
Boat: Cobalt R4
Configuration: Single
Test Date: 7-Sep-2021
Cobalt® - Cobalt R4

Performance Bulletin

67 - Cobalt R4

Cobalt R4

Length 24' 3"
Beam 8' 6"
Dry Weight (Boat Mfr. Pub) 4,570 lbs
Maximum HP 300 hp
Fuel Capacity 70 gal
Weight as Tested 6,237 lbs

F300XCB2

Horsepower 300 hp
Induction EFI/VCT/DOHC
Displacement 4.2L
Weight (Estimated) 556 lbs
Gear Ratio 1.75:1

Engine Mounting Height

Mounting Hole Position #3

Propeller(s)

Series Saltwater Series II™
Diameter x Pitch 15-1/2 x 17
Yamaha Part # 6CE-45978-20-00
Propeller Material Polished Stainless Steel

Test Conditions

Number of People 2
Air / Water Temperature (Fahrenheit) 72° F / 88° F
Elevation (in feet above sea level) 826'
Wind Velocity 0-5 MPH

Comments

Test weight includes 60 gallons of fuel, 2 batteries, sport tower, windlass, safety and test equipment.

YPB#: PB_COB_R4_F300XCB2_9-8-21_DCK

Cobalt® - Cobalt R4

Performance Bulletin


Engine: Yamaha F300XCB2
Boat: Cobalt R4
Configuration: Single
Test Date: 7-Sep-2021
F300XCB2

Performance Data

RPM
MPH
GPH
MPG
1000 5.2 1.3 4.00
1500 7.3 2.2 3.32
2000 8.5 3.5 2.43
2500 9.9 5.6 1.77
3000 12.6 7.2 1.75
3500 22.8 8.3 2.75
4000 32.7 10.9 3.00
4500 37.6 14.6 2.58
5000 42.3 17.6 2.40
5500 46.8 21.7 2.16
6000 51.0 25.7 1.98

0-20 MPH: 5.53 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.