The Yamaha F90LB (F90LB) is the pinnacle of mid-range power, offering a perfect balance of torque, fuel efficiency, and lightweight design. Built on a 1.8-liter, four-cylinder SOHC platform, this engine utilizes a single overhead camshaft to drive four valves per cylinder, maximizing volumetric efficiency. With its 20-inch long shaft and advanced Electronic Fuel Injection (EFI), the F90LB provides instant starts and smooth performance for aluminum fishing boats, pontoons, and fiberglass skiffs.
Technical Specifications
| Model Number / MPN |
F90LB |
| Horsepower |
90 HP @ 5500 RPM |
| Shaft Length |
20 Inches (Long Shaft) |
| Engine Type |
1.8L Inline 4-Cylinder / SOHC |
| Displacement |
1832 cc (111.8 cubic inches) |
| Starting System |
Electric Start |
| Alternator Output |
35 Amp |
| Dry Weight |
Approx. 353 lbs (160 kg) |
Reliable Power, Masterfully Delivered
- Precision EFI: Optimized fuel atomization ensures turnkey starts, incredible fuel economy, and crisp throttle response in all altitudes.
- Advanced SOHC Design: Single Overhead Camshaft with 4 valves per cylinder provides superior air intake for massive low-end torque.
- Variable Trolling RPM: Allows anglers to adjust trolling speed in 50-RPM increments via a Command Link® gauge or tiller handle.
- Lightweight Champion: One of the lightest 90hp 4-stroke engines on the market, perfect for re-powering older hulls.
- High-Output Alternator: 35-amp charging power supports modern electronics, livewells, and trolling motor batteries.
Quiet Excellence for Every Waterway
The Yamaha F90LB is built for the long haul. Its inline-four configuration is inherently smooth, reducing the vibrations and noise common in smaller-displacement engines. Protected by Yamaha’s proprietary YDC-30 anti-corrosion alloy and backed by a legendary reputation for resale value, the F90LB is the smart investment for serious boaters. Whether you are running offshore or cruising the lake, this 90hp EFI provides the reliable performance that has made Yamaha a maritime icon.
Frequently Asked Questions
1. Does this model support Yamaha's VTS (Variable Trolling System)?
Yes. The F90LB is fully compatible with Yamaha's Variable Trolling RPM Switch, making it ideal for precision lure presentation.
2. Is this a tiller or remote steer engine?
This is a remote-control model. It is designed to be connected to a steering wheel and console controls (sold separately).
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