Yamaha Midrange Outboards
Yamaha Midrange Outboards form a versatile and popular category within Yamaha’s extensive marine engine lineup. These engines typically span a horsepower range from around 25hp up to 150hp. They are renowned for striking an excellent balance between power, fuel efficiency, reliability, and affordability, making them suitable for a vast array of recreational boating applications.

This segment of outboards is a favorite among anglers, family boaters, and those who need dependable power for medium-sized vessels without the extreme demands of offshore performance or the minimal power of portable engines.

Key Characteristics and Technologies
Yamaha’s Midrange outboards benefit from the company’s long-standing expertise in four-stroke engine development, incorporating features that enhance both performance and user experience:

Four-Stroke Efficiency and Quietness
All modern Yamaha Midrange outboards are four-stroke engines. Consequently, they deliver superior fuel economy and significantly quieter, smoother operation compared to older two-stroke counterparts. This enhances the overall boating experience, especially during long days on the water.

Electronic Fuel Injection (EFI)
Virtually all Yamaha Midrange outboards feature Electronic Fuel Injection. This system provides precise fuel delivery, which results in:

Easy Starting: Reliable starts in various temperatures.
Smooth Idling: Consistent and stable engine operation at low RPMs.
Optimized Performance: The engine’s Electronic Control Module (ECM) continuously adjusts the air/fuel mixture for peak power and efficiency across the entire RPM range.
Reduced Emissions: EFI helps meet stringent emission standards.
Lightweight and Compact Design
Yamaha engineers design these engines to be as light and compact as possible. This is particularly noticeable in models like the F70, which boasts best-in-class power-to-weight. Lightweight construction benefits boat performance by improving hole shot, top speed, and overall handling, especially on smaller to medium-sized hulls.

Variable Trolling RPM Switch (VTS®)
Many Midrange models incorporate Yamaha’s VTS® feature. This allows the operator to precisely adjust the engine’s trolling speed in 50 RPM increments, often from as low as 600 RPM. This is invaluable for anglers who need fine control over lure presentation or for maintaining a very slow pace in no-wake zones. VTS® is typically controlled via a button on the Command Link® tachometer or an optional tiller handle.

Reliability and Durability
Yamaha outboards, including the Midrange series, are known for their robust construction and long-term durability. Features like corrosion-resistant alloys, multi-stage paint processes, and dedicated freshwater flush systems contribute to their longevity in marine environments.

High-Output Alternators
Modern boats often run multiple electronic devices. Yamaha Midrange outboards come with capable alternators that provide ample power to keep batteries charged, even during extended periods of idling or trolling. For instance, the F90 and F115 often feature 35-amp or higher alternators.

Various Control Options
Yamaha offers Midrange outboards with options for both traditional mechanical (cable) controls and increasingly, advanced digital electronic controls (DEC), particularly on higher horsepower models within this range (like the F150). This allows for seamless integration with modern boat systems and offers smoother, more precise throttle and shift operation. Some models are also available with multi-function tiller handles for smaller boat applications.

Compatibility with Digital Gauges
Many Yamaha Midrange outboards are compatible with Yamaha’s Command Link® and Command Link Plus® digital gauge systems. These systems provide boaters with comprehensive real-time data, including RPM, fuel consumption, trim angle, engine hours, and warning indicators.

Typical Horsepower Models and Their Characteristics
F25 / F30 / F40 / F50 / F60 (In-Line 3 & 4 Cylinder): These are often found on smaller aluminum fishing boats, rigid inflatable boats (RIBs), smaller pontoons, and tenders. They emphasize light weight, compact design, and excellent fuel economy. The F25 and F40, for example, have seen recent redesigns bringing them up to modern standards with EFI and enhanced features.
F70 (In-Line 4 Cylinder): Highly regarded for its exceptional power-to-weight ratio and compact size, the F70 is a popular choice for lightweight skiffs, aluminum boats, and smaller pontoons where maximum horsepower for weight is critical.
F75 / F90 / F115 (In-Line 4 Cylinder): These models are workhorses for a wide range of boats. The F90 and F115, in particular, offer a great balance of power, efficiency, and reliability for bay boats, deeper V aluminum boats, family runabouts, and mid-sized pontoons. The F115 is especially popular for repowering older boats due to its light weight and performance.
F150 (In-Line 4 Cylinder): This is often considered the top end of the “midrange” and the entry point into the “high horsepower” category. The F150 is arguably one of the most popular outboards globally. It provides robust power for larger bay boats, offshore center consoles, dual consoles, and heavier pontoons. The F150 has seen significant updates, including optional digital electronic controls and integrated steering on newer variations, offering enhanced control and rigging simplicity.
Ideal Applications
Yamaha Midrange Outboards are suitable for a vast array of recreational and light-commercial applications, including:

Aluminum Fishing Boats: From small jon boats to larger deep-V fishing machines.
Fiberglass Fishing Boats: Including bay boats, flats boats, and smaller offshore models.
Pontoon Boats: Providing reliable and efficient power for cruising and watersports.
Family Runabouts and Bowriders: Offering ample power for waterskiing, tubing, and general recreation.
Rigid Inflatable Boats (RIBs) and Tenders: Balancing power with manageable weight.
Workboats and Rental Fleets: Where durability, fuel efficiency, and ease of maintenance are crucial.
In conclusion, Yamaha Midrange Outboards consistently deliver a compelling combination of performance, efficiency, and Yamaha’s renowned reliability. Their diverse range of horsepower and features ensures there’s a suitable model for nearly every boater seeking dependable power in the middle segment of the marine market.