Please ensure Javascript is enabled for purposes of website accessibility

YAMAHA 450HP

Specs

Weight † 437 kg (963 lbs) / 448 kg (988 lbs) / 458 kg (1010 lbs)
Full Throttle RPM Range 5000 - 6000 RPM
Fuel Induction System Direct Injection / Up to 2900 PSI
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Engine Type V8 / DOHC / 32 valves / 4 Valves per Cylinder
Displacement 5.6L
Bore x Stroke 96 x 96 mm (3.78 x 3.78 in)
Prop Shaft Horsepower 450hp at 6000 RPM
Alternator Output at W.O.T. 102 Amp Gross, Max (up to 96 NET at idle)
Compression Ratio 12.3:1
Recommended Fuel Octane 89
Recommended Fuel Filtration Yamaha 10-Micron Fuel / Water Separating Filter (external)
C.A.R.B. Rating 3-Star
Exhaust Through Propeller (Except in Reverse Under 2500 RPM)
Intake 32-valve
Ignition TCI Microcomputer
Spark Plug ILMAR7E-9 / Iridium
Starting System Electric w/ PTT
Lubrication Wet Sump
Engine Oil Capacity 7.8L / 8.2 Quarts | 7.5L / 7.9 Quarts
Recommended Cooling Thermostatic Control
Ethanol Blend Limit 10% Maximum
Gear Ratio (25/14) 1.79
Gear Shift Forward, Neutral, Reverse
Shaft Length 25" - 30" - 35"
Degree of Tilt -4° through +73°
Degree of Trim -4° through +16°
Mounting Centers 28.5"
Steering Integrated, Electric Actuation
Steering Angle (maximum) 31° from center, either direction
Warranty Limited 5-Year Pleasure, 3-Year Government, 1-Year Commercial