Yamaha YFM40FP C Big Bear 4X4 2002 Owner's Manual

Yamaha YFM40FP C Big Bear 4X4 2002 manual cover

Pages 172

Year 2002

Language(s)

of 172

Yamaha YFM40FP C Big Bear 4X4 2002 Specification

The Yamaha YFM40FP C Big Bear 4X4 2002 is a robust all-terrain vehicle (ATV) engineered for both utility and recreational use. It is powered by a 386cc, air-cooled, SOHC, four-stroke engine that delivers reliable performance and durability. The engine is paired with a five-speed manual transmission, complete with an automatic clutch and reverse gear, providing versatile control over various terrains.

The ATV features a 4x4 drive system, which enhances its capability to tackle challenging environments, including mud, snow, and rocky landscapes. The suspension system includes an independent double-wishbone front suspension with 5.9 inches of travel and a swingarm rear suspension with 7.1 inches of travel, ensuring a smooth ride over rough terrain.

The Yamaha YFM40FP C Big Bear 4X4 2002 is equipped with front and rear sealed drum brakes, offering reliable stopping power in diverse conditions. The ATV rides on 25-inch tires, providing excellent ground clearance and traction. The vehicle's overall dimensions are practical for maneuverability and ease of transport, with a length of 78.1 inches, a width of 42.5 inches, and a height of 45.3 inches. It has a dry weight of 557 pounds and a fuel capacity of 3.6 gallons, including a reserve.

Ergonomically designed, the ATV includes a comfortable seat and straightforward handlebar controls, making it user-friendly for extended use. The utility racks at the front and rear offer ample storage space for carrying tools and supplies, adding to its functionality for work-related tasks. The Yamaha YFM40FP C Big Bear 4X4 2002 stands out as a reliable and versatile ATV, suitable for both rugged adventures and practical utility applications.

Yamaha YFM40FP C Big Bear 4X4 2002 F.A.Q.

What type of oil should I use for my Yamaha YFM40FP C Big Bear 4X4 2002?

For the Yamaha YFM40FP C Big Bear 4X4 2002, it is recommended to use 10W-40 or 15W-40 4-stroke motorcycle oil that meets or exceeds the JASO MA standard. Ensure it is suitable for wet clutch systems.

How often should I change the oil in my Yamaha Big Bear 400?

The oil in the Yamaha Big Bear 400 should be changed every 3,000 miles or every 6 months, whichever comes first. Regular maintenance ensures optimal performance and longevity of the engine.

Why is my Yamaha Big Bear 400 overheating?

Overheating can be caused by low coolant levels, a clogged radiator, or a malfunctioning thermostat. Check these components and ensure the cooling system is working properly to prevent overheating.

How do I adjust the idle speed on my Yamaha Big Bear 400?

To adjust the idle speed, locate the idle adjustment screw on the carburetor. Turn it clockwise to increase the idle speed or counterclockwise to decrease it. The recommended idle speed is usually around 1,300 to 1,500 RPM.

What is the correct tire pressure for the Yamaha Big Bear 400?

The recommended tire pressure for the Yamaha Big Bear 400 is approximately 4 psi for the front tires and 4 psi for the rear tires. Always refer to the owner's manual for specific guidelines.

How do I troubleshoot electrical issues on my Yamaha Big Bear 400?

Start by checking the battery connections and ensuring they are clean and tight. Inspect the fuses and replace any that are blown. If the issue persists, examine the wiring for damage and consult a professional if needed.

What type of spark plug should be used in the Yamaha Big Bear 400?

The recommended spark plug for the Yamaha Big Bear 400 is the NGK DR8EA. Ensure the gap is set correctly, typically at 0.7-0.8 mm, before installation.

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

To improve fuel efficiency, ensure the air filter is clean, maintain proper tire pressure, and keep the carburetor properly tuned. Regular maintenance and avoiding excessive idling can also help.

How do I clean the carburetor on a Yamaha Big Bear 400?

Remove the carburetor from the ATV and disassemble it carefully. Use a carburetor cleaner to clean the jets and passages. Reassemble the carburetor and ensure all gaskets and seals are intact before reinstalling.

What should I do if my Yamaha Big Bear 400 won't start?

Check the battery charge and connections, ensure there is fresh fuel, and inspect the spark plug for fouling. If it still won't start, consider checking the fuel system and ignition components for any faults.