Yamaha YFM660FP Grizzly Ultramatic 2002 Owner's Manual

Yamaha YFM660FP Grizzly Ultramatic 2002 manual cover

Pages 192

Year 2002

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Yamaha YFM660FP Grizzly Ultramatic 2002 Specification

The Yamaha YFM660FP Grizzly Ultramatic 2002 is an all-terrain vehicle (ATV) designed for both recreational and utility purposes. This model is equipped with a 660cc, liquid-cooled, four-stroke, single-cylinder engine that delivers robust performance and reliability. The engine features a 10.0:1 compression ratio, providing ample torque and power across various terrains. The Ultramatic transmission system, a hallmark of Yamaha's engineering, incorporates a V-belt drive and an automatic centrifugal clutch, ensuring seamless power delivery and superior traction control.

The Grizzly 660 employs a dual-range (Hi/Lo) drive system with reverse, enhancing its versatility for different riding conditions. Its four-wheel independent suspension system, with dual A-arms at the front and a swingarm at the rear, ensures excellent handling and ride comfort. The ATV is fitted with hydraulic disc brakes on both the front and rear, offering reliable stopping power.

The chassis is constructed from high-strength steel, providing durability and stability, while the overall design maintains a low center of gravity for improved maneuverability. The vehicle also features a robust 4WD system that can be engaged on-the-fly, allowing for smooth transitions between 2WD and 4WD modes.

Additional features include a digital LCD instrument panel displaying essential information such as speed, fuel level, and engine diagnostics. The Grizzly 660 offers a substantial ground clearance of 11.8 inches, making it suitable for rugged environments. It also includes front and rear cargo racks with a combined carrying capacity of 264 pounds, catering to both recreational riders and those needing utility transport.

Overall, the Yamaha YFM660FP Grizzly Ultramatic 2002 combines advanced engineering, robust performance, and practical features, making it a versatile and reliable choice for ATV enthusiasts.

Yamaha YFM660FP Grizzly Ultramatic 2002 F.A.Q.

What type of oil should be used for the Yamaha YFM660FP Grizzly Ultramatic 2002?

Use a 4-stroke engine oil that meets the specifications of API service classification of SE, SF, SG, or higher, and a viscosity of SAE 10W-30 or 20W-40, depending on the ambient temperature.

How often should the air filter be cleaned or replaced?

The air filter should be checked every 20 hours of operation or monthly, and cleaned or replaced as necessary to ensure optimal performance.

What is the recommended tire pressure for the Yamaha YFM660FP Grizzly Ultramatic 2002?

The recommended tire pressure is 4.0 psi for the front tires and 4.0 psi for the rear tires. Adjust the pressure based on load and terrain conditions.

How can I troubleshoot starting issues with my Grizzly 660?

Check the battery charge and connections, ensure the fuel is fresh, inspect the spark plug, and verify that the ignition switch is functioning properly.

What regular maintenance is required for the CVT belt in the Yamaha Grizzly 660?

Inspect the CVT belt every 100 hours or annually for wear and tear, and replace it if there are signs of cracking, glazing, or excessive wear.

How do I adjust the idle speed on the Yamaha YFM660FP Grizzly?

Locate the idle adjustment screw on the carburetor. Turn it clockwise to increase the idle speed or counterclockwise to decrease it, aiming for an idle speed of 1,450-1,550 rpm.

What should I do if the Yamaha Grizzly 660 overheats?

Immediately stop the engine and allow it to cool down. Check the coolant level, ensure the radiator fins are clean, and inspect the cooling fan for proper operation.

How can I improve the fuel efficiency of my Grizzly 660?

Maintain proper tire pressure, regularly clean the air filter, use the recommended grade of oil, and avoid carrying unnecessary loads to improve fuel efficiency.

What is the correct procedure for changing the spark plug on a Yamaha YFM660FP Grizzly?

Remove the spark plug cap, use a spark plug wrench to remove the old plug, check the gap on the new plug, and install it, tightening by hand first, then using a wrench to secure it.

How do I ensure the brakes on my Grizzly 660 are functioning properly?

Regularly inspect the brake pads for wear, check the brake fluid level, and ensure there are no leaks in the brake lines. Adjust the brake lever and pedal free play as needed.