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Performance Bulletin


Engine: Yamaha LF350XSA2 / F350XSA2
Boat: Excalibur LTD QLST-W
Configuration: Twin
Test Date: 21-Oct-2025
Avalon - Excalibur LTD QLST-W

Performance Bulletin

26 - Excalibur LTD QLST-W

Excalibur LTD QLST-W

Length 27' 0"
Beam 8' 6"
Dry Weight (Boat Mfr. Pub) 4,800 lbs
Maximum HP 1,000 hp
Fuel Capacity 100 gal
Pontoon # / Diameter 3 / 27"
Weight as Tested 6,928 lbs

LF350XSA2 / F350XSA2

Horsepower 350 hp
Induction EFI/VCT/DOHC
Displacement 4.3L
Weight (Estimated) 629 - 629 lbs
Gear Ratio 1.75:1

Engine Mounting Height

Mounting Hole Position #4

Propeller(s)

Series Saltwater Series II HP
Diameter x Pitch 15 x 20
Yamaha Part # 6KB-45974-00-00 / 6KA-45974-00-00
Propeller Material Stainless Steel

Test Conditions

Number of People 2
Air / Water Temperature (Fahrenheit) 51° F / 59° F
Elevation (in feet above sea level) 802'
Wind Velocity 10 -15 MPH

Comments

Test weight includes 45 gallons of fuel, 3 batteries, rough water package, safety and test equipment.

YPB#: PB_AVA_Excalibur LTD QLST-W_TW_LF350XSA2_10-21-25_PNT

Avalon - Excalibur LTD QLST-W

Performance Bulletin


Engine: Yamaha LF350XSA2 / F350XSA2
Boat: Excalibur LTD QLST-W
Configuration: Twin
Test Date: 21-Oct-2025
LF350XSA2 / F350XSA2

Performance Data

RPM
MPH
GPH
MPG
1000 6.1 2.5 2.44
1500 10.1 4.3 2.35
2000 17.3 6.4 2.72
2500 22.9 9.5 2.41
3000 29.5 13.1 2.25
3500 34.6 16.3 2.13
4000 40.8 21.9 1.86
4500 47.6 26.6 1.79
5000 52.8 34.4 1.54
5500 57.7 44.3 1.30
6050 64.4 57.5 1.12

0-20 MPH: 5.20 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.