Yamaha YZ85P1 2001 Owner's Manual

Pages 242

Year 2002

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Yamaha YZ85P1 2001 Specification

The Yamaha YZ85P1 2001 is a high-performance motocross bike engineered for young riders who are serious about racing. It is equipped with an 84.7cc liquid-cooled, two-stroke, single-cylinder engine that delivers robust power and acceleration. The advanced Yamaha Power Valve System (YPVS) optimizes the exhaust port timing for improved throttle response and power delivery across the RPM range. The bike features a Keihin PWK28 carburetor, ensuring precise fuel-air mixture for consistent performance.

The chassis is constructed from high-tensile steel, offering durability and stability. The suspension system includes a fully adjustable, 36mm inverted telescopic front fork and a fully adjustable monocross rear shock, both designed to handle demanding terrains. The braking system comprises a 220mm front disc brake and a 190mm rear disc brake, providing reliable stopping power.

The YZ85P1 has a six-speed transmission with a multi-plate wet clutch, allowing smooth and efficient gear shifts. Its 17-inch front and 14-inch rear wheels are fitted with knobby tires for optimal traction on dirt tracks. The bike's ergonomics are tailored for young riders, featuring a slim seat and adjustable handlebars to accommodate different rider sizes and preferences.

The fuel tank has a capacity of 5 liters, providing ample range for extended riding sessions. The overall dry weight of the bike is approximately 71 kilograms, making it lightweight and easily maneuverable. With its combination of advanced engineering, high-quality components, and race-ready features, the Yamaha YZ85P1 2001 remains a popular choice for aspiring young motocross racers.

Yamaha YZ85P1 2001 F.A.Q.

How do I adjust the chain tension on my Yamaha YZ85P1 2001?

To adjust the chain tension, place the bike on a stand, loosen the axle nut, and adjust the chain tensioner bolts on both sides of the swingarm evenly until the chain has about 1.2 inches of slack. Tighten the axle nut to secure the wheel.

What type of engine oil should I use for my Yamaha YZ85P1 2001?

Use a high-quality 2-stroke engine oil. Yamaha recommends using Yamalube 2-R or a similar high-grade 2-stroke oil for optimal performance.

How often should I clean the air filter on my Yamaha YZ85P1 2001?

It's recommended to clean the air filter after every 3 to 5 rides, or more frequently if you are riding in dusty conditions. Regular cleaning ensures optimal engine performance and longevity.

What is the correct tire pressure for the Yamaha YZ85P1 2001?

The recommended tire pressure for the YZ85P1 is approximately 12-15 psi for both the front and rear tires, depending on terrain and rider preference.

How can I troubleshoot starting problems on my Yamaha YZ85P1 2001?

Check the spark plug for fouling or wear, ensure the fuel is fresh, inspect the carburetor for clogs, and verify the kill switch is functioning properly. If issues persist, consult a professional mechanic.

What maintenance should be performed after each ride on a Yamaha YZ85P1 2001?

After each ride, clean the bike thoroughly, check and tighten any loose bolts, lubricate the chain, inspect tires for wear and proper inflation, and ensure the brakes are functioning well.

How do I change the spark plug on my Yamaha YZ85P1 2001?

To change the spark plug, remove the spark plug cap, use a spark plug socket to unscrew the old plug, and install a new one, ensuring it's properly gapped. Screw it in by hand to prevent cross-threading, then tighten with the socket.

What is the recommended coolant for the Yamaha YZ85P1 2001?

Use a high-quality ethylene glycol-based coolant mixed with distilled water at a 1:1 ratio. This ensures efficient cooling and prevents corrosion in the cooling system.

How can I improve the suspension setup on my Yamaha YZ85P1 2001?

Adjust the fork and shock settings to suit your weight and riding style. Refer to the owner's manual for recommended settings or consult a professional for personalized tuning.

What should I do if my Yamaha YZ85P1 2001 is overheating?

Check the coolant level and ensure the radiator is clean and free of obstructions. Inspect the water pump and thermostat for proper operation, and ensure the mixture is not too lean, which can cause overheating.