Yamaha YFM660FR Ultramatic Grizzly 660 2003 Owner's Manual

Yamaha YFM660FR Ultramatic Grizzly 660 2003 manual cover

Pages 192

Year 2003

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Yamaha YFM660FR Ultramatic Grizzly 660 2003 Specification

The Yamaha YFM660FR Ultramatic Grizzly 660 from 2003 is a robust all-terrain vehicle designed for both utility and recreational purposes. It features a 660cc, liquid-cooled, 4-stroke, single-cylinder engine, delivering substantial power and torque for challenging terrains. The engine is equipped with a SOHC (Single Overhead Camshaft) configuration, ensuring efficient airflow and combustion, which enhances performance and fuel efficiency. The Ultramatic transmission system is an automatic, continuously variable transmission (CVT) that provides seamless power delivery and includes an automatic centrifugal clutch for consistent belt tension and reduced wear.

The Grizzly 660 comes with a selectable 2WD and 4WD system, allowing the rider to switch between modes based on terrain requirements. It also includes a front differential lock for enhanced traction in difficult conditions. The suspension system features independent double wishbones with adjustable preload shocks at the front and rear, offering superior handling and comfort over rough terrain. The braking system consists of dual hydraulic disc brakes in the front and a sealed, oil-bathed, multi-disc brake in the rear, ensuring reliable stopping power.

The ATV is built on a sturdy steel frame, designed to withstand rigorous use. It includes a spacious, ergonomically designed seat for rider comfort during extended use. The Grizzly 660 has a fuel capacity of approximately 5.3 gallons, providing ample range for long rides. It also features durable, all-terrain tires that ensure optimal grip and stability. The ATV includes utility racks at the front and rear, enhancing its functionality for carrying equipment and supplies. With its blend of power, durability, and versatility, the Yamaha YFM660FR Ultramatic Grizzly 660 2003 is a dependable choice for enthusiasts and professionals alike.

Yamaha YFM660FR Ultramatic Grizzly 660 2003 F.A.Q.

What type of oil should I use for the Yamaha YFM660FR Ultramatic Grizzly 660 2003?

It is recommended to use 10W-40 4-stroke motorcycle oil for optimal performance and protection of your Yamaha YFM660FR Ultramatic Grizzly 660 2003.

How do I troubleshoot starting issues with my Yamaha Grizzly 660?

First, check the battery connections and ensure the battery is charged. If the problem persists, inspect the starter motor, solenoid, and ignition switch for faults.

What is the recommended tire pressure for the Yamaha Grizzly 660?

The recommended tire pressure for the Yamaha Grizzly 660 is 4 psi for the front tires and 5 psi for the rear tires.

How often should I change the air filter on my Yamaha Grizzly 660?

The air filter should be checked and cleaned every 20 hours of operation, or more frequently in dusty conditions, and replaced if necessary.

What should I do if my Yamaha Grizzly 660 is overheating?

Check the coolant levels and ensure the radiator is not blocked. Inspect the fan operation and thermostat. If issues persist, consult a professional mechanic.

How do I perform a basic maintenance check on my Yamaha Grizzly 660?

Regular maintenance includes checking oil levels, tire pressure, brake function, and ensuring all nuts and bolts are properly tightened. Also, inspect the air filter and coolant levels.

What should I do if the Yamaha Grizzly 660's transmission is slipping?

Check the transmission fluid level and condition. If the fluid is low or dirty, replace it. Inspect the drive belt for wear and adjust if necessary.

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

Regular maintenance such as ensuring clean air filters, properly inflated tires, and using recommended oil can improve fuel efficiency. Avoid excessive idling and aggressive acceleration.

What are the common signs of a worn-out drive belt on the Yamaha Grizzly 660?

Common signs include slipping, unusual noises, and a decrease in power transmission. Regularly inspect the belt for cracks, fraying, and wear.

How do I adjust the brakes on my Yamaha Grizzly 660?

To adjust the brakes, locate the adjuster screw on the brake lever or pedal, and turn it to achieve the desired tension. Ensure the brakes engage smoothly without excessive play.