Yamaha YFZ450RSEY YFZ 450R 2009 Owner's Manual

Yamaha YFZ450RSEY YFZ 450R 2009 manual cover

Pages 164

Year 2009

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Yamaha YFZ450RSEY YFZ 450R 2009 Specification

The Yamaha YFZ450RSEY YFZ 450R 2009 is a high-performance all-terrain vehicle (ATV) designed for sport and racing enthusiasts. At its core, the ATV is powered by a robust 449cc liquid-cooled, 4-stroke, DOHC engine, delivering exceptional power and acceleration. The engine features a five-valve cylinder head and titanium valves, optimizing airflow and combustion efficiency, which enhances overall performance.

The YFZ450RSEY incorporates an advanced fuel injection system that ensures precise fuel delivery, resulting in consistent throttle response and improved fuel efficiency. The ATV's transmission is a five-speed manual with a multi-plate wet clutch, providing smooth and reliable gear transitions. The chassis is constructed from a lightweight, yet durable aluminum frame, contributing to its agility and handling prowess.

Suspension components include fully adjustable front and rear shocks, with the front utilizing dual A-arms and the rear featuring a swingarm setup. This configuration allows for customizable ride settings to match various terrains and riding styles. The braking system comprises dual hydraulic disc brakes at the front and a single hydraulic disc brake at the rear, ensuring consistent and powerful stopping capabilities.

Ergonomically, the YFZ450RSEY is designed with a rider-focused approach, featuring a comfortable seat, well-positioned handlebars, and footpegs that provide excellent control and comfort during extended rides. The ATV also boasts aggressive styling with an aerodynamic body design, providing both aesthetic appeal and functional benefits in reducing wind resistance.

Overall, the Yamaha YFZ450RSEY YFZ 450R 2009 stands out as a top-tier sport ATV, blending advanced engineering, superior performance, and rider-centric design to deliver an unparalleled off-road experience.

Yamaha YFZ450RSEY YFZ 450R 2009 F.A.Q.

How do I properly break in my Yamaha YFZ450RSEY engine?

To break in your Yamaha YFZ450RSEY engine, start by warming up the engine for a few minutes. During the first 10 hours, vary the engine speed and avoid full-throttle operation. Gradually increase the throttle after this period while ensuring regular maintenance checks.

What is the recommended oil type for the YFZ450RSEY?

Use a high-quality 10W-40 or 10W-50 4-stroke motorcycle oil that meets or exceeds the API service classification of SG or higher. Ensure the oil also meets JASO MA standards for wet clutch compatibility.

How often should I change the oil on my YFZ450RSEY?

Change the oil after the first 20 hours of use or once a month during the break-in period. Afterward, change the oil every 15-20 hours of riding or every three months, whichever comes first.

How can I troubleshoot starting issues with my YFZ450RSEY?

First, check the battery charge and connections. Ensure the kill switch is in the 'run' position. Inspect the spark plug for wear or fouling and replace if necessary. If the issue persists, verify fuel delivery and look for clogged fuel lines or filters.

What are the common maintenance tasks for the YFZ450RSEY?

Regular maintenance includes checking and changing the oil and oil filter, inspecting and cleaning the air filter, checking tire pressure and tread, examining brake pads and fluid levels, and ensuring chain tension and lubrication.

How can I adjust the chain tension on my YFZ450RSEY?

To adjust the chain tension, loosen the rear axle nut and adjust the chain adjuster bolts on both sides of the swingarm evenly. Aim for a 1-1.5 inch slack in the chain at its midpoint. Tighten the axle nut after adjustment.

What should I do if my YFZ450RSEY overheats?

If your ATV overheats, immediately stop and let it cool. Check the coolant level and ensure the radiator is not clogged with debris. Verify the radiator fan operation and inspect the water pump. If the problem continues, consult a professional mechanic.

How do I clean the air filter on my YFZ450RSEY?

Remove the air filter from its housing, gently clean it with a mild detergent and water, and allow it to dry completely. Apply air filter oil evenly over the surface before reinstalling it. Ensure the airbox is also clean and free of debris.

What tire pressure is recommended for the YFZ450RSEY?

The recommended tire pressure for the YFZ450RSEY is 4 psi for the front tires and 4 psi for the rear tires. Always check tire pressure when the tires are cold and adjust as necessary for riding conditions.

How can I improve the suspension performance on my YFZ450RSEY?

To improve suspension performance, adjust the preload, compression, and rebound settings according to your weight and riding style. Consider upgrading to aftermarket shocks for enhanced performance. Regularly inspect and maintain the suspension components.