Yamaha TTR90M 2000 Owner's Manual

Pages 131

Year 2000

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Yamaha TTR90M 2000 Specification

The Yamaha TTR90M 2000 is a youth-oriented off-road motorcycle designed for beginners and young riders. It features a 90cc, air-cooled, SOHC, 4-stroke engine that provides reliable and manageable power, making it ideal for new riders. The engine is paired with a 3-speed automatic-clutch transmission, allowing for smooth and easy shifting without the need for manual clutch operation. This design enhances the learning experience by simplifying the handling dynamics.

The TTR90M's chassis consists of a steel frame that offers a good balance between strength and flexibility, ensuring durability and a comfortable ride. The suspension system includes a telescopic front fork and a single rear shock, providing sufficient travel to handle varied off-road terrains. The bike's wheelbase and low seat height are specifically designed to cater to younger riders, offering better control and stability.

Braking is managed by drum brakes on both the front and rear wheels, providing adequate stopping power for the bike's intended use and rider capability. The TTR90M runs on knobby tires that deliver excellent traction on dirt trails, contributing to a safer and more enjoyable riding experience.

Aesthetically, the TTR90M features Yamaha's iconic blue and white color scheme, along with a rugged design that reflects its off-road capabilities. The bike's compact size and lightweight construction make it easy for young riders to handle and maneuver. The fuel capacity and efficiency of the engine ensure extended riding sessions without frequent refueling, enhancing the overall convenience for both riders and their guardians.

Overall, the Yamaha TTR90M 2000 is a thoughtfully designed youth dirt bike that combines ease of use, safety, and reliability, making it an excellent choice for young aspiring off-road enthusiasts.

Yamaha TTR90M 2000 F.A.Q.

How do I properly adjust the chain tension on my Yamaha TTR90M 2000?

To adjust the chain tension, first place the bike on a stand to elevate the rear wheel. Loosen the axle nut and adjust the chain adjusters on both sides evenly until there's about 1-1.5 inches of slack in the chain at the midpoint. Tighten the axle nut and recheck the tension.

What type of oil should I use for my Yamaha TTR90M 2000 and how often should it be changed?

Use a high-quality 10W-40 4-stroke motorcycle oil. Change the oil every 600 miles or every 6 months, whichever comes first. Always check the oil level before each ride.

How can I troubleshoot starting issues with my Yamaha TTR90M 2000?

First, check the fuel supply and ensure the fuel petcock is in the 'ON' position. Verify that the spark plug is clean and properly gapped. Inspect the air filter for clogs. If the bike still doesn't start, check the carburetor for blockages.

What are the recommended tire pressures for the Yamaha TTR90M 2000?

The recommended tire pressure for the front tire is 15 psi and for the rear tire is 15 psi. Always check the tire pressure before each ride to ensure optimal performance and safety.

How do I clean and maintain the air filter on my Yamaha TTR90M 2000?

Remove the air filter cover and take out the air filter. Clean it with a mild detergent and warm water, then rinse thoroughly. Allow it to dry completely before applying air filter oil. Reinstall the filter and cover securely.

What should I do if the Yamaha TTR90M 2000 is overheating?

Ensure the cooling fins on the engine are clean and unobstructed. Check the oil level and quality, as poor lubrication can cause overheating. Make sure the engine isn't idling for prolonged periods, especially in hot weather.

How often should I check and adjust the valve clearance on my Yamaha TTR90M 2000?

Check and adjust the valve clearance every 3,000 miles or if you hear unusual engine noise. Proper valve clearance ensures optimal engine performance and longevity.

What is the correct spark plug type and gap for the Yamaha TTR90M 2000?

The recommended spark plug type is NGK CR6HSA. The spark plug gap should be set to 0.6-0.7 mm. Regularly inspect the spark plug for wear and deposits.

How can I improve the suspension performance on my Yamaha TTR90M 2000?

To improve suspension performance, ensure the fork oil is fresh and at the correct level. Consider upgrading to stiffer springs or adjusting the pre-load settings if available, to better suit your riding style and weight.

What are the basic steps for winterizing my Yamaha TTR90M 2000?

Drain the fuel from the tank and carburetor, change the oil, and remove the battery to store in a warm, dry place. Lubricate all cables and moving parts, and cover the bike to protect it from dust and moisture.