Yamaha 300HP F300USB2 White DEC Outboard – 30″ Shaft
The white 300-horsepower Yamaha F300USB2 uses DEC controls and a 30-inch shaft for compatible transoms. Electronic operation supports precise throttle and shift commands, while the engine’s output provides dependable propulsion for offshore cruising and fishing applications.
Description
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Yamaha 300HP F300USB2 White DEC Outboard Specs
| Brand | Yamaha Marine |
| Full Model Code / Part Number | F300USB2 (White / Standard Rotation / 30" Shaft) |
| Country of Origin | Japan / USA |
| Engine Type & Configuration | 4-Stroke V6 (DOHC 24-Valve with VCT) |
| Horsepower Output (HP / kW) | 300 HP (221 kW) |
| Displacement (cc / cu in) | 4169 cc (254 cu in) |
| Bore x Stroke (mm / in) | 96.0 x 96.0 mm (3.78 x 3.78 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5000 - 6000 RPM |
| Fuel Induction System | Electronic Fuel Injection (EFI) - V6 VST |
| Ignition System | TCI Microcomputer |
| Starting System | Electric Start (Digital Electronic Control) |
| Steering System | Integrated Digital Electronic Steering (DES) / DEC |
| Trim & Tilt System | Power Trim & Tilt |
| Gear Ratio & Shift Mechanism | 1.75:1 (Forward - Neutral - Reverse) |
| Exhaust System | Through Prop Hub |
| Recommended Transom Shaft Length | XXL: 30 inches |
| Alternator / Charging Output (Amps / Watts) | 70 Amp (Maximum) / 840 Watts |
| Recommended Fuel Grade & Oil Type | Regular Unleaded (Min. 89 Octane Recommended) / Yamalube 4M FC-W 10W-30 |
| Dry Weight (kg / lbs) | 257 kg / 567 lbs |
| Standard Warranty | 3 Years Limited Pleasure Boat Warranty |
Common Question of Yamaha F300USB2 White
Is the white F300USB2 a DEC?
Yes. The white Yamaha F300USB2 is specified as a DEC outboard with a 30-inch shaft. Confirm the exact control equipment, harnesses, gauges, battery requirements, steering, and fuel system through Yamaha documentation. Proper compatibility supports this high performance outboard motor installation on a suitable tall-transom boat.
What transom matches its shaft?
A 30-inch transom is the intended match for this white F300USB2 configuration. Measure the hull according to Yamaha’s instructions before mounting because incorrect shaft length can affect cooling-water pickup, gearcase depth, propeller immersion, steering response, and trim. Correct measurement supports this ready to bolt marine package.
Does it use fuel injection?
Confirm the exact Yamaha fuel system before making an EFI claim. The supplied title identifies DEC controls but does not explicitly state fuel injection. Verify fuel-system details, controls, wiring, battery, steering equipment, gauges, engine weight, and package contents before installation.
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