Yamaha TT-R125T, TT-R125ET, TT-R125LWT, TT-R125LWET 2005 Owner's Manual

Yamaha TT-R125T, TT-R125ET, TT-R125LWT, TT-R125LWET 2005 manual cover

Pages 288

Year 2005

Language(s)

of 288

Yamaha TT-R125T, TT-R125ET, TT-R125LWT, TT-R125LWET 2005 Specification

The 2005 Yamaha TT-R125 series, including the TT-R125T, TT-R125ET, TT-R125LWT, and TT-R125LWET models, represents a versatile range of off-road motorcycles designed for both beginners and experienced riders. Each model is powered by a 124cc, air-cooled, SOHC, four-stroke engine that delivers reliable performance and ease of maintenance. The engine features a Mikuni VM20 carburetor which ensures efficient fuel delivery and smooth throttle response.

The TT-R125 series is built on a robust steel frame, providing durability and stability on various terrains. The suspension setup includes a telescopic front fork with 31mm tubes and a single rear shock absorber, both offering ample travel to handle rough trails comfortably. The braking system consists of a 220mm front disc brake and a 110mm rear drum brake, delivering consistent stopping power.

The TT-R125LWT and TT-R125LWET models are distinguished by their larger wheel sizes, with a 19-inch front wheel and a 16-inch rear wheel, compared to the 17-inch front and 14-inch rear wheels on the TT-R125T and TT-R125ET. This difference enhances the handling and stability of the LWT and LWET models, making them suitable for taller riders or more challenging trails.

All models come with a manual 5-speed transmission, allowing for precise control over power delivery. The TT-R125ET and TT-R125LWET variants are equipped with an electric start system in addition to the standard kick start, providing added convenience. The fuel tank capacity across the series is 1.74 gallons, ensuring extended riding sessions without frequent refueling.

In terms of ergonomics, the TT-R125 series features a comfortable seat height, a well-positioned handlebar, and foot pegs that provide a balanced riding posture. The overall lightweight design, combined with these ergonomic features, makes the 2005 Yamaha TT-R125 series an excellent choice for off-road enthusiasts seeking performance, reliability, and ease of handling.

Yamaha TT-R125T, TT-R125ET, TT-R125LWT, TT-R125LWET 2005 F.A.Q.

How often should I change the oil in my Yamaha TT-R125?

It is recommended to change the oil every 6 months or every 3,000 miles, whichever comes first. Regular oil changes help maintain engine performance and longevity.

What type of fuel should I use for the TT-R125?

The Yamaha TT-R125 is designed to run on unleaded gasoline with a minimum octane rating of 87. Using high-quality fuel can improve performance and efficiency.

How do I adjust the chain tension on my TT-R125?

To adjust the chain tension, first loosen the rear axle nut. Then, adjust the chain adjusters on both sides of the swingarm until the chain has about 1-1.5 inches of slack at its tightest point. Finally, retighten the axle nut securely.

What is the correct tire pressure for the Yamaha TT-R125?

The recommended tire pressure for the TT-R125 is 15 psi for the front tire and 15 psi for the rear tire. Regularly checking the tire pressure can help ensure optimal handling and safety.

How can I troubleshoot starting issues with my TT-R125?

If your TT-R125 is having trouble starting, check the battery for charge, ensure the fuel valve is open, verify there is fuel in the tank, and inspect the spark plug for wear or fouling.

What is the recommended spark plug for the TT-R125?

The recommended spark plug for the Yamaha TT-R125 is an NGK CR7HSA. Ensure that the spark plug gap is set to the manufacturer's specifications before installation.

How do I clean the air filter on my TT-R125?

To clean the air filter, first remove the filter from the air box. Wash it gently with soapy water, rinse thoroughly, and allow it to dry completely. Lightly oil the foam filter before reinstalling it to ensure proper filtration.

What maintenance should be performed regularly on the TT-R125?

Regular maintenance includes checking and adjusting the chain, changing the oil, inspecting the brakes, cleaning the air filter, and ensuring the tires are properly inflated. Regular maintenance helps keep your bike running smoothly.

How do I check the brake fluid level on my TT-R125?

To check the brake fluid level, locate the brake fluid reservoir on the handlebar. Ensure the bike is level and check the fluid level through the sight glass. The fluid should be between the minimum and maximum marks.

What should I do if my TT-R125's engine overheats?

If your engine overheats, turn off the bike immediately and let it cool down. Check the coolant level, inspect for any leaks, and ensure the radiator is not obstructed. If the issue persists, consult a professional mechanic.