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 trusted 115-horsepower inline-four powerhead with a factory-installed jet pump, giving boaters the ability to run confidently in water too shallow for traditional prop-driven setups. With its 25-inch shaft equivalent and jet drive design, this model is built for anglers, hunters, river guides, and anyone who needs to move through skinny water without worrying about prop strikes or debris.

The jet unit provides strong thrust and quick response, making the F115JB ideal for rivers, rocky shallows, and marsh environments. Electric start, power trim & tilt, and Yamaha’s EFI system keep operation simple and consistent, delivering smooth power, reliable acceleration, and solid fuel efficiency throughout the day.

Key Features:

• 80 Horsepower, 1.8L Inline 4-Cylinder 4-Stroke Engine-Delivers dependable, smooth power with Yamaha’s well-known reliability.
• Factory Jet Drive Lower Unit-Allows true shallow-water running with no exposed propeller.
• 25-Inch Shaft Length-Sized for hulls with higher transoms that still require shallow-draft capability.
• Electric Start-Push-button ignition for quick, easy starting.
• Power Trim & Tilt-Adjust running angle for better performance or clearance in tight, shallow spots.
• Gray Finish-Classic Yamaha styling that pairs well with many boat designs.
• Electronic Fuel Injection (EFI)-Improves throttle response, cold-start reliability, and overall fuel economy.

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

Frequently Asked Questions

Q: How is the F115JB different from other F115 models?

A: It uses a factory jet drive instead of a propeller, giving it the ability to operate in extremely shallow water.

Q: Can the jet drive be converted to a prop lower unit?

A: No. This is a dedicated jet-drive engine and isn’t designed for conversion.

Q: What boats is this motor best suited for?

A: Shallow-draft fishing boats, jet-ready hulls, river-running rigs, and other boats built specifically for jet propulsion.