Yamaha TT-R90P, TT-R90PC 2002 Owner's Manual

Yamaha TT-R90P, TT-R90PC 2002 manual cover

Pages 134

Year 2002

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of 134

Yamaha TT-R90P, TT-R90PC 2002 Specification

The 2002 Yamaha TT-R90P and TT-R90PC are youth-oriented off-road motorcycles designed with a focus on reliability, ease of use, and performance. Both models are equipped with an air-cooled, 4-stroke, single-cylinder engine with a displacement of 89cc, delivering smooth and manageable power suitable for young riders. The engine features a SOHC (Single Overhead Camshaft) configuration, ensuring efficient fuel combustion and optimal performance.

The motorcycles utilize a three-speed semi-automatic transmission, eliminating the need for a clutch lever and making gear changes straightforward for beginners. The robust steel frame provides durability and stability, essential for off-road riding conditions. Front suspension consists of a telescopic fork with 3.8 inches of travel, while the rear suspension features a monocross system with 3.4 inches of travel, offering a comfortable ride over various terrains.

Both models are fitted with drum brakes on the front and rear wheels, providing reliable stopping power. The wheelbase measures 40.9 inches, contributing to stable handling characteristics. The seat height is a manageable 24.6 inches, making it accessible for younger riders. Curb weight is approximately 125 pounds, ensuring the bike is light enough for easy maneuverability.

Fuel capacity stands at 1.1 gallons, offering ample range for extended riding sessions. The TT-R90P and TT-R90PC also include standard equipment such as knobby tires for enhanced traction on dirt trails and a chain guard for added safety. The primary difference between the two models is that the TT-R90PC features an electric start system, providing added convenience over the traditional kick-start mechanism found on the TT-R90P.

Overall, the 2002 Yamaha TT-R90P and TT-R90PC are designed to offer young riders a reliable, easy-to-handle, and enjoyable off-road riding experience, combining practical features with Yamaha’s renowned build quality.

Yamaha TT-R90P, TT-R90PC 2002 F.A.Q.

What is the recommended oil type for Yamaha TT-R90P and TT-R90PC 2002?

The recommended oil type for the Yamaha TT-R90P and TT-R90PC 2002 is Yamalube 4, 10W-40 or an equivalent high-performance oil.

How often should I change the oil in my Yamaha TT-R90P 2002?

It is recommended to change the oil every 6 months or every 1,000 miles, whichever comes first, to ensure optimal engine performance.

What is the correct tire pressure for the Yamaha TT-R90PC 2002?

The correct tire pressure for the Yamaha TT-R90PC 2002 is 15 psi for the front tire and 15 psi for the rear tire.

How do I troubleshoot a Yamaha TT-R90P 2002 that won't start?

Check the fuel level, ensure the kill switch is in the 'run' position, inspect the spark plug for fouling, and verify the battery is charged.

What type of spark plug is recommended for the Yamaha TT-R90PC 2002?

The recommended spark plug for the Yamaha TT-R90PC 2002 is NGK CR6HSA.

How do I adjust the chain tension on my Yamaha TT-R90P 2002?

Loosen the axle nut, adjust the chain tensioner bolts equally on both sides until the chain has about 20-30 mm of slack, then retighten the axle nut.

What is the proper way to clean the air filter on a Yamaha TT-R90PC 2002?

Remove the air filter, wash it with warm soapy water, rinse thoroughly, let it dry completely, then apply air filter oil before reinstalling.

How can I improve the fuel efficiency of my Yamaha TT-R90P 2002?

Regular maintenance such as keeping the air filter clean, ensuring proper tire pressure, and maintaining correct chain tension can improve fuel efficiency.