Yamaha T25LWTC Owner's Manual

Pages 126

Year 2022

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Yamaha T25LWTC Specification

The Yamaha T25LWTC is a 25-horsepower, four-stroke outboard motor designed for efficient and reliable marine performance. It is engineered with a focus on fuel efficiency, environmental responsibility, and durability. The engine features a compact and lightweight design that enhances portability and ease of installation. Its four-stroke technology ensures smooth and quiet operation, making it ideal for various watercraft applications, including fishing boats and small yachts.

The T25LWTC is equipped with a single overhead camshaft and two valves per cylinder, optimizing combustion efficiency and power output. Its electronic fuel injection system provides precise fuel delivery, resulting in improved fuel economy and reduced emissions. This model also includes a high-thrust propeller, which enhances the motor's ability to maneuver at low speeds, especially beneficial for activities such as trolling.

The outboard motor has a long shaft length, suitable for boats with higher transoms, ensuring proper propeller submersion and performance. It incorporates Yamaha's PrimeStart™ system for effortless starting in various conditions, eliminating the need for a choke or priming. The freshwater flush capability helps maintain the motor by preventing corrosion and extending its lifespan.

The T25LWTC is built with Yamaha's renowned anti-corrosion protection, featuring a combination of aluminum alloy and a multi-layered paint process that guards against the harsh marine environment. The motor's ergonomic tiller handle provides comfortable steering control, and its variable trolling RPM switch allows for fine-tuning of engine speed for precise trolling.

Overall, the Yamaha T25LWTC is a versatile and robust choice for boaters seeking a balance of power, efficiency, and reliability in a compact outboard solution.

Yamaha T25LWTC F.A.Q.

How do I perform routine maintenance on the Yamaha T25LWTC outboard motor?

To perform routine maintenance on the Yamaha T25LWTC, regularly check and change the engine oil, inspect the propeller for damage, ensure the cooling water intake is clear of debris, and replace the spark plugs as needed. Always refer to the owner's manual for detailed maintenance schedules and procedures.

What is the recommended oil type for the Yamaha T25LWTC?

The recommended oil type for the Yamaha T25LWTC is Yamaha's 4-stroke outboard motor oil. It is designed specifically for Yamaha outboards to ensure optimal performance and protection.

How can I troubleshoot if the Yamaha T25LWTC won't start?

If the Yamaha T25LWTC won't start, check the fuel system for proper priming, ensure the battery is fully charged, inspect the spark plugs for fouling, and verify that the emergency stop switch is in the 'Run' position. Refer to the troubleshooting section of the owner's manual for further guidance.

What should I do if the engine overheats?

If the Yamaha T25LWTC overheats, immediately stop the engine and check the cooling water intake for blockages. Also, inspect the water pump impeller and replace it if necessary. Allow the engine to cool before restarting.

How often should I replace the water pump impeller on the Yamaha T25LWTC?

The water pump impeller should be inspected annually and replaced every two to three years, or sooner if you notice reduced water flow from the telltale or engine overheating.

What are the steps to winterize the Yamaha T25LWTC?

To winterize the Yamaha T25LWTC, flush the engine with fresh water, change the engine oil and filter, add fuel stabilizer to the fuel system, and fog the cylinders with fogging oil. Store the engine in an upright position in a dry, protected area.

How do I adjust the idle speed on the Yamaha T25LWTC?

To adjust the idle speed on the Yamaha T25LWTC, locate the idle speed adjustment screw on the carburetor and turn it slowly to reach the desired idle speed. Ensure the engine is warm and in neutral gear during adjustment.

What should I do if there's excessive vibration during operation?

Excessive vibration in the Yamaha T25LWTC can be caused by a damaged propeller, loose mounting bolts, or improper engine alignment. Inspect and repair or replace the propeller as needed, and ensure all bolts are tightened to specifications.

How can I ensure optimal fuel efficiency for the Yamaha T25LWTC?

To ensure optimal fuel efficiency, regularly service the engine, use high-quality fuel and oil, maintain the correct propeller pitch and size, and avoid overloading the boat. Properly trimming the boat can also help reduce drag and improve efficiency.

What is the procedure for replacing the propeller on the Yamaha T25LWTC?

To replace the propeller on the Yamaha T25LWTC, first remove the cotter pin and prop nut. Slide off the old propeller, then grease the propeller shaft and install the new propeller. Secure it with the prop nut, tighten it to the specified torque, and insert a new cotter pin.