Yamaha F115JB Jet Drive Motor

25-Inch Shaft Equivalent | Remote Control | Electric Start | Power Trim & Tilt | Jet Pump | Gray

The Yamaha F115JB Jet Drive Motor pairs Yamaha’s proven 115-horsepower inline 4-cylinder powerhead with a factory-installed jet drive for exceptional shallow-water performance. With its 25-inch shaft, this model is designed for anglers, hunters, and boaters who demand reliable power in areas where propeller-driven motors can’t operate.

The jet drive lower unit lets the F115JB navigate extremely shallow waters without risking prop damage, making it perfect for rivers, marshes, and flats. Electric start, power trim & tilt, and Yamaha’s Electronic Fuel Injection (EFI) ensure easy operation, quick acceleration, fuel efficiency, and dependable performance.

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Key Features:

• 80 Horsepower, 1.8L Inline 4-Cylinder 4-Stroke Engine
  Delivers strong, smooth power with Yamaha’s renowned reliability.
• Factory Jet Drive Lower Unit
  Enables ultra-shallow-water operation with no exposed propeller.
• 25-Inch Shaft Length
  Designed for boats with higher transoms that still require shallow-water performance.
• Electric Start
  Push-button ignition for fast, dependable starts.
• Power Trim & Tilt
  Allows easy adjustment of running angle for performance or shallow-water clearance.
• Gray Finish
  Yamaha’s classic look that pairs well with a wide variety of boats.
• Electronic Fuel Injection (EFI)
  Improves throttle response, fuel economy, and cold-start reliability.

Need help choosing your engine? Check out our Yamaha engine guide.

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Frequently Asked Questions

Q: How is the F115JB different from other F115 models?
A: It’s equipped with a jet drive instead of a propeller, allowing it to run in much shallower water.

Q: Can I convert the jet drive to a propeller system?
A: No, the F115JB is a dedicated jet drive model and cannot be converted to a propeller lower unit.

Q: What types of boats is this motor best suited for?
A: Flat-bottom boats, shallow-draft fishing rigs, and river boats designed for jet propulsion.