Yamaha YFM25BW Big Bear 250 2007 Owner's Manual

Yamaha YFM25BW Big Bear 250 2007 manual cover

Pages 156

Year 2007

Language(s)

of 156

Yamaha YFM25BW Big Bear 250 2007 Specification

The 2007 Yamaha YFM25BW Big Bear 250 is a versatile and rugged all-terrain vehicle (ATV) designed to handle various off-road environments. It features a 230cc, air-cooled, single-cylinder, four-stroke engine that delivers reliable power and performance for both recreational and utility purposes. The engine is paired with a five-speed manual transmission, including a reverse gear, providing smooth and precise control over diverse terrains. The ATV's chassis is constructed from high-tensile steel, ensuring durability and robustness. It is equipped with an independent double-wishbone front suspension and a swingarm rear suspension, both with ample travel to absorb shocks and provide a comfortable ride over rough surfaces.

The braking system comprises dual hydraulic front disc brakes and a sealed rear drum brake, offering reliable stopping power in various conditions. The Big Bear 250 features a sturdy and functional design, with a front cargo rack capable of carrying up to 44 pounds and a rear rack supporting up to 66 pounds, making it suitable for hauling equipment and supplies. Its overall dimensions include a length of 76.2 inches, a width of 42.7 inches, and a height of 43.1 inches, with a wheelbase of 45.1 inches, providing stability and maneuverability. The seat height is set at a comfortable 32.6 inches, and the ATV has a ground clearance of 6.3 inches, allowing it to navigate obstacles with ease.

The fuel tank has a capacity of 2.6 gallons, ensuring extended operation between refueling. The Big Bear 250 weighs in at approximately 397 pounds, making it manageable for a wide range of riders. Yamaha's attention to detail and commitment to quality are evident in the 2007 YFM25BW Big Bear 250, making it a reliable choice for those seeking a capable and durable ATV.

Yamaha YFM25BW Big Bear 250 2007 F.A.Q.

How do I change the oil on my Yamaha YFM25BW Big Bear 250 2007?

To change the oil, warm up the engine, place the ATV on a level surface, remove the oil drain bolt, and let the oil drain completely. Replace the drain bolt and add new oil through the oil filler cap. Make sure to use the recommended oil type and quantity specified in the owner's manual.

What type of spark plug should I use for my Yamaha Big Bear 250?

The recommended spark plug for the Yamaha YFM25BW Big Bear 250 2007 is an NGK DR8EA. Ensure the gap is set correctly as per the specifications in the owner's manual before installation.

How can I troubleshoot starting issues with my Yamaha Big Bear 250?

If the ATV won't start, check the battery for charge and connections, inspect the spark plug for fouling, ensure fuel is reaching the engine, and verify that the kill switch is not engaged.

What is the correct tire pressure for the Yamaha YFM25BW Big Bear 250 2007?

The recommended tire pressure is typically around 4 psi for the front tires and 4.4 psi for the rear tires. Always check the owner's manual for the exact specifications.

How often should I perform maintenance on my Yamaha Big Bear 250?

Regular maintenance should be performed every 6 months or 1000 miles, whichever comes first. This includes oil changes, air filter cleaning, and checking brakes, lights, and tire condition.

What should I do if my ATV's brakes feel spongy?

If the brakes feel spongy, check the brake fluid level and look for any leaks in the brake lines. Bleeding the brakes may be necessary to remove air from the system. If problems persist, consult a professional mechanic.

How do I adjust the chain tension on my Yamaha Big Bear 250?

To adjust the chain tension, loosen the rear axle nut, adjust the chain adjusters evenly on both sides to achieve the desired tension, and retighten the axle nut. Ensure the chain has the proper slack as specified in the manual.

What could be causing my Yamaha Big Bear 250 to overheat?

Overheating can be caused by low coolant levels, a faulty thermostat, or a clogged radiator. Ensure that the cooling system is functioning properly and that there are no leaks.

How do I replace the air filter on my Yamaha Big Bear 250?

To replace the air filter, remove the seat and air filter cover, take out the old air filter, and install a new one. Ensure it is seated properly before replacing the cover and seat.

My Yamaha Big Bear 250's headlights aren't working; what should I check?

Check the headlight bulbs for any signs of damage or burnout. Inspect the fuses and wiring connections to ensure there are no breaks or loose connections. Replace any faulty components as necessary.