Yamaha YFM400FV Big Bear 400 2006 Owner's Manual

Yamaha YFM400FV Big Bear 400 2006 manual cover
Pages 178
Year 2006
Language(s)
English en

Yamaha YFM400FV Big Bear 400 2006 Specification

The Yamaha YFM400FV Big Bear 400 of 2006 is a robust all-terrain vehicle (ATV) designed for both utility and recreational purposes. It is powered by a 386cc, air-cooled, SOHC, four-stroke engine that provides reliable performance and is mated to a five-speed manual transmission with an automatic clutch and reverse gear, enabling smooth transitions across various terrains. The ATV features a durable Ultramatic V-belt transmission system, ensuring consistent power delivery and reduced wear.

The chassis is built with a steel frame, enhancing durability and stability. The front suspension consists of independent double wishbones with five-way preload-adjustable shocks, offering 6.3 inches of travel, while the rear suspension employs a swingarm with a single shock absorber, providing 7.1 inches of travel. These suspension components ensure a comfortable ride over rough terrain.

Braking is managed through dual hydraulic front disc brakes and a sealed rear drum brake, delivering reliable stopping power in diverse conditions. The YFM400FV is equipped with 25-inch tires mounted on durable steel wheels, offering optimal traction and ground clearance of 9.7 inches.

Additional features include a 4.0-gallon fuel tank for extended riding sessions, a digital LCD multifunction display for essential information, and front and rear cargo racks with a combined load capacity of 198 pounds. The ATV also incorporates a winch-ready design, facilitating the addition of accessories for enhanced utility.

Overall, the Yamaha YFM400FV Big Bear 400 of 2006 stands out as a versatile and dependable ATV, well-suited for a range of outdoor activities, from work-related tasks to recreational adventures.

Yamaha YFM400FV Big Bear 400 2006 F.A.Q.

How do I perform regular maintenance on my Yamaha YFM400FV Big Bear 400 2006?

Perform regular maintenance by checking and changing the oil, inspecting the air filter, examining the brakes, and ensuring bolts are tight. Refer to the owner's manual for specific intervals and procedures.

What type of oil should I use for the Yamaha YFM400FV Big Bear 400 2006?

Use a high-quality 4-stroke engine oil with a viscosity grade of 10W-40. Ensure it meets the JASO MA standard for optimal performance.

How can I troubleshoot starting issues with my Big Bear 400?

Check the battery connections, ensure the fuel system is working, inspect the spark plug, and verify the kill switch is in the correct position.

What should I do if the engine overheats?

Stop the ATV immediately, allow it to cool down, check coolant levels, and inspect for any obstructions in the radiator or cooling fins.

How often should I replace the air filter?

Replace the air filter every 6 months or more frequently if you ride in dusty conditions to ensure optimal engine performance.

What tire pressure is recommended for the Big Bear 400?

The recommended tire pressure is typically 4 psi for the front tires and 4 psi for the rear tires, but always refer to the manual for specific recommendations.

How do I check and adjust the valve clearance?

To check and adjust the valve clearance, remove the valve covers, use a feeler gauge to measure clearance, and adjust the rocker arms as necessary. Refer to the service manual for specifications and torque values.

What are common electrical issues and how can I address them?

Common electrical issues include battery failure and faulty wiring. Check for loose connections, test the battery voltage, and inspect the wiring harness for damage.

How can I improve the fuel efficiency of my Yamaha Big Bear 400?

Maintain proper tire pressure, perform regular engine tune-ups, use the recommended fuel type, and avoid aggressive riding to improve fuel efficiency.

What should I do if my ATV has poor throttle response?

Inspect and clean the carburetor, check the throttle cable for proper tension, and ensure the air filter is clean. Adjust the carburetor settings if necessary.