Yamaha T25LA v5 Owner's Manual

Yamaha T25LA manual cover
Pages 122
Year 2016
Language(s)
English en

Yamaha T25LA Specification

The Yamaha T25LA is a highly efficient and reliable four-stroke outboard motor designed for small to medium-sized watercraft. This engine features a 432cc displacement, ensuring robust power output and smooth performance. It delivers a maximum thrust of 25 horsepower, making it ideal for both recreational and commercial use. The motor is engineered with an innovative single overhead camshaft (SOHC) that optimizes fuel intake and exhaust for enhanced efficiency and reduced emissions.

The T25LA incorporates Yamaha's Precision Multi-Point Fuel Injection system, which guarantees precise fuel delivery for improved throttle response and fuel economy. This system helps maintain consistent performance across varying conditions. The engine's lightweight design, weighing approximately 126 kilograms, ensures easy handling and installation. It is equipped with a 20-inch shaft length, suitable for versatile mounting on various boat transoms.

Yamaha's advanced anti-corrosion protection, including a proprietary YDC-30 aluminum alloy and a five-layer paint process, ensures durability and longevity even in harsh marine environments. The T25LA also features an efficient water cooling system with a thermostat for optimal operating temperature management, contributing to its reliability and extended lifespan.

This outboard motor is designed with a convenient electric start system, complemented by a manual pull start for backup. The integrated power trim and tilt function allows for effortless adjustment of the motor's angle, enhancing maneuverability and performance. The T25LA is compliant with stringent emission standards, reflecting Yamaha's commitment to environmentally friendly technology. Overall, this outboard motor exemplifies Yamaha's dedication to innovation, quality, and performance, making it a top choice for boaters seeking reliability and efficiency.

Yamaha T25LA F.A.Q.

How do I perform regular maintenance on a Yamaha T25LA outboard motor?

To maintain your Yamaha T25LA, regularly check and change the engine oil, inspect the fuel line for leaks, clean the spark plugs, replace the water pump impeller annually, and flush the cooling system with fresh water after each use in saltwater.

What should I do if the Yamaha T25LA outboard motor won't start?

First, check the fuel level and ensure the fuel line is not kinked. Verify the battery is charged and connections are tight. Inspect the spark plugs for wear or fouling and replace if necessary. Confirm the kill switch is in the correct position.

How can I troubleshoot overheating issues in my Yamaha T25LA?

Ensure the water intake is not blocked and the water pump impeller is functioning properly. Check for debris in the cooling passages and confirm that the thermostat is working and not stuck closed.

What is the recommended propeller pitch for a Yamaha T25LA?

The recommended propeller pitch varies based on the boat's size and usage, but generally, a pitch between 9 to 11 inches is suitable for most applications. Consult your dealer for specific recommendations.

How do I properly store a Yamaha T25LA for the winter?

Flush the cooling system with fresh water, add fuel stabilizer to the tank, run the engine to circulate the stabilizer, change the oil and filter, grease all fittings, remove the battery and store it in a cool dry place, and cover the engine to protect it from dust and moisture.

What type of fuel is recommended for the Yamaha T25LA outboard motor?

Use unleaded gasoline with a minimum octane rating of 87. Avoid ethanol-rich fuels, as they can cause damage to the fuel system components over time.

How often should the oil be changed in a Yamaha T25LA outboard motor?

The engine oil should be changed every 100 hours of operation or at least once per season, whichever comes first. Regular oil changes ensure optimal performance and longevity of the engine.

What should I check if there's a loss of power in my Yamaha T25LA?

Inspect the propeller for damage or debris, check the fuel filter for clogs, ensure the spark plugs are in good condition, and verify that the air intake is not obstructed. Fuel quality should also be checked.

How can I prevent corrosion on my Yamaha T25LA?

Rinse the engine thoroughly with fresh water after each use, apply anti-corrosion spray to metallic parts, and ensure anodes are intact and replaced when necessary. Regular maintenance checks can help prevent corrosion-related issues.

What is the break-in procedure for a new Yamaha T25LA outboard?

For the first hour, operate the engine at varying speeds up to 2000 RPM. For the second hour, operate up to 3000 RPM, and for the next eight hours, avoid full throttle for more than five minutes at a time. This ensures proper engine seating and performance.