Yamaha T9.9 Four-Stroke High Thrust

Maximum Thrust, Reliable Performance and Outstanding Control

The Yamaha T9.9 High Thrust Four-Stroke Outboard is designed for boat owners who need pushing power rather than outright speed. Ideal for yachts, displacement hulls, larger tenders and auxiliary applications, the T9.9 delivers excellent low-speed control and dependable Yamaha performance.

Unlike conventional portable outboards, Yamaha's High Thrust design uses a specialised gearcase with a higher reduction ratio and a larger-diameter propeller. This combination delivers greater thrust at lower speeds, making it particularly effective when manoeuvring heavier boats, operating in strong currents or using the engine as auxiliary power.

Powered by Yamaha's 212cc twin-cylinder four-stroke engine, the T9.9 offers smooth, quiet and economical operation. Its compact design and proven reliability make it a popular choice for cruising yachts and boat owners who need dependable auxiliary propulsion.

The High Thrust gearcase is designed to provide excellent control in both forward and reverse, giving skippers greater confidence when manoeuvring around marinas, moorings and confined spaces.

Whether you're powering a displacement boat, using it as an auxiliary engine or looking for reliable propulsion for your yacht, the Yamaha T9.9 delivers the pushing power and control needed to get the job done.

Key Features

• 9.9HP Four-Stroke Engine – Reliable 212cc twin-cylinder SOHC engine delivering smooth, economical performance.
• High Thrust Gearcase – Specially designed reduction gearing delivers increased propeller thrust at lower boat speeds.
• Large-Diameter Propeller – Optimised for pushing heavier loads and displacement hulls rather than high-speed performance.
• Excellent Reverse Thrust – High Thrust propeller and exhaust design improve reverse performance and low-speed manoeuvrability.
• Smooth & Quiet Operation – Twin-cylinder design helps reduce vibration and engine noise.
• Yamaha PrimeStart™ – Automatic starting enrichment provides convenient starting without a conventional choke.
• Electric Start Options – Available on selected configurations for convenient starting.
• Power Tilt Options – Selected models offer power tilt for easier raising and lowering of the engine.
• External Fuel Tank – Separate fuel supply provides practical range for longer periods of operation.
• Yamaha Corrosion Protection – Designed to withstand demanding marine environments.

Technical Specifications

Specifications and equipment vary depending on the exact T9.9 model. Please confirm available configurations when enquiring.

Why Choose a High Thrust Outboard?

A conventional outboard is generally designed to deliver a balance of acceleration and top-end speed. Yamaha's High Thrust outboards are different.

By using a larger propeller and specialised reduction gearing, the T9.9 converts engine power into increased pushing force at lower speeds.

This makes it particularly well suited to:

• Yachts and Sailboats – Reliable auxiliary propulsion with excellent manoeuvrability.
• Displacement Hulls – Improved pushing power for heavier, slower-moving boats.
• Large Tenders – Better control when carrying additional passengers or equipment.
• Auxiliary Applications – Dependable backup propulsion for larger vessels.

Available at Bay of Islands Yamaha

The Yamaha T9.9 High Thrust is an excellent option for boat owners needing dependable low-speed pushing power and precise control.

Whether you're replacing an existing auxiliary outboard or selecting an engine for your yacht, our team can help you choose the correct shaft length, steering arrangement and starting system for your boat.

Contact Bay of Islands Yamaha for pricing, availability and advice on selecting the right Yamaha High Thrust outboard.