Yamaha Big Bear 400 4×4 Specs and Review 2022

Yamaha Big Bear 400 4×4: Its Yamaha Big Bear 400 was a reliable and tough quad capable of getting the task accomplished. 

Its power offered a fantastic value for high-end performance, and its rugged appearance, as well as towing capabilities and powerful engine, made it popular with the public. People loved this model even with its flaws.

Yamaha Big Bear 400 4×4

It is often being compared to often compared to a Fourtrax 300 and confused with the Wolverine The Yamaha Big Bear 400 made it quite popular in its 12-year run of production. 

It was a mid-sized chassis with dual driveline options, a fluid transmission, and an engine that was powerful The Big Bear was a breakthrough for Yamaha.

The quad has remained in line with Yamaha’s reputation for making durable and reliable vehicles to the end and even many Yamaha fans were devastated by the end of the vehicle. 

This article will shed light on the reasons why Big Bear is so well-loved by the public as you discover its specifications and features, as well as highs and lows, as well as others.

Yamaha Big Bear

The Revolutionary 4×4

Yamaha Big Bear 400 is the 17th model launched by Yamaha since the 1980 Tri-Moto debut in the U.S. It was the Yamaha Big Bear 400 was originally designed to be a work vehicle and was marketed with the same terms as its predecessor in 1987, the 350-class.

It wasn’t the first ATV with 4×4 specs however, it was able to offset its predecessor in that it was the very first model with completely camouflaged bodies, making it a popular hunting vehicle. 

The four-wheeler was made between 2000 and 2012 before it stopped production to create the remainder of Yamaha’s ATV range.

Yamaha became busy during Big Bear’s production runs, and created different trims for the entire model year:

Yamaha Big Bear Trims

  • 2000 Yamaha Big Bear 400
  • YFM400FWNM-FWNMC-FWNHM (4WD Buckmaster)
  • YFM400M-NMC (2WD 4WD)
  • 2001 Yamaha Big Bear 400
  • YFM400FHN-FN (4WD Hunter)
  • YFM400HN-N (2WD Realtree)
  • 2002 Yamaha Big Bear 400
  • YFM400P-HP (2X4 Hunter)
  • YFM400FP (4X4)
  • 2003 Yamaha Big Bear 400
  • YFM400FWR (4X4)
  • YFM400NR (400 2WD)
  • 2004 Yamaha Big Bear 400 (YFM40S 2WD)
  • 2004 Yamaha Big Bear 400 (YFM40FS 4X4)
  • 2005 Yamaha Big Bear 400 (YFM40FT 4X4)
  • 2006 Yamaha Big Bear 400 (YFM40FV 4X4)
  • 2007 Yamaha Big Bear 400
  • YFM40FBEW-FBHW-FBW (4WD Hunter IRS Exploring Edition)
  • 2008 Yamaha Big Bear 400
  • 2009 Yamaha Big Bear 400 (FM400FB 4WD)
  • 2010 Yamaha Big Bear 400 (YFM400FB 4WD)
  • 2011 Yamaha Big Bear 400
  • 2012 Yamaha Big Bear 400 (YFM400FB 4WD)

If there’s anything that best represents the brand name for this model, it’s the engine. The power unit of this model is comparable to a V8 incorporated inside a mid-sized 4×4. 

It comes with the BSR33 style dirt bike carb, a 4-gallon gas tank, a huge oil cooler, as well as a CDI ignition.

On the exterior, the quad’s flexible plastic fenders are durable and easy to clean. They also provide enough splash guards. 

Front and rear bumpers guard the mechanical parts, and racks give plenty of cargo space. Electronics and fuses are located under the seat, as are the battery and airbox.

2000 Yamaha Big Bear 400 Specs (YFM400FNM)

  • Engine It’s powered by a 4-stroke air-cooled one-cylinder SOHC engine. The power mill with a forward-inclined design has a bore-stroke ratio of 83 71.5 x 71.5 millimeters (3.27 3.27 inches x 2.82 inches). 
  • It’s Yamaha Big Bear 400 4-x4 features the engine’s displacement at 386 cubic centimeters. the compression ratio is 8.6:1 and the wet-sump lubrication method. The 33mm Mikuni BSR carburetor manages the mixture of air and fuel. Tank capacity for fuel can be 3.96 US gallons/15 liters, with 1.06 US gallons/4 liters reserve.
  • Drivetrain The power is transmitted via the constant mesh, five-speed, centrifugal wet type of automatic transmission (inclusive of reverse gear) reverse gear). 
  • It comes with a spur gear as well as a secondary shaft drive system that’s left-foot operated. A low first gear allows the quad to take on the most difficult trails and chores. 
  • On-Command In/Out 4WD is a feature in the new 2012 Yamaha Big Bear 400, which allows you to switch between full-lock differential and 2WD 4WD by pushing a button.
  • Ignition It is powered with the DC-CDI electric start system, which includes an additional recoil mechanical backup that helps to reduce the slippage. It also comes with an AC-magneto generator that requires a 12V 18 Ah battery.
  • tires (Rotary) Dunlop the KT404 AT25 Front tires and Dunlop the KT4058 AT25 10-12 rear tires fit on steel tube wheels. Recommended tire pressures are 3.6 per cent/25 kPa (0.25 kg/cm2). 
  • Do not exceed the limits for tire pressure of 3.2 22kPa/psi (0.22 kg/cm2) and 36 psi/250kPa (2.5 kilograms of force/cm2).).
  • Brakes Front dual disc brakes are hydraulically controlled and an enclosed mechanical drum at the rear gives you the Big Bear stopping power.
  • Suspension The quad has an independent double-wishbone front suspension and an adjustable swing arm suspension for the rear.
  • It comes with five preload-adjustable shocks that provide 5.9 inches of travel. It was the year 2004 and Yamaha Big Bear 400 had premium Showa springs and shocks both front and rear.
  •  In any model car’s IRS offers the highest ground clearance, as well as excellent ability to maneuver on a variety of terrains.
  • Dimensions The overall dimensions are 79 43.7 x 43.7 and 46.1 inches (2,007 1111 1172 millimeters L x W x). Ground clearance for the minimum is 9.65 inches, and the maximum rotation radius for the quad is 124 inches. 
  • The wheelbase of the vehicle measures 48.4 inches. The weight of the curb is 266 KG/586 pounds. The towing capability is 904 pounds/410 lbs and 265 lbs/120.2 Kg rack capacity.
  • Exterior It is comprised of a tube frame made of steel (with an angle of the caster that is 4 degrees and a 21-mm trail) and a plastic body material. The complete floorboard is in the driver’s sleeve. 
  • The wheeler has standard handgrips and fenders, the front skid plate for the A-arm as well as front and rear bash plates.
  • The instrumentation includes an odometer for the trip, a speedometer, as well as temperature and fuel indicators. You will also get an 88 lbs/39.9 kg worth of extra storage underneath the seat.

The Yamaha Big Bear 400 had 30 trims over its 12-year run of production Based on online references and studies.

What Big Bear Owners Love About Their Quad

The Big Bear owners have a feature or two they love about the car. For many, it’s the manual shift auto clutch and the five-speed transmission. In the case of rock-climbers, it’s the first gear with the lowest speed. 

This is due to the absence of a CVT belt (according to them, CVT belts need more maintenance). For the actual John, it’s the wheeler’s mid-range strength and towing capacity.

Riders are happy not the turbo lag that can occur when they let off their throttle and swiftly return to the throttle. Farmers are amazed by the capability of the quad to haul logs up to 12 feet without difficulty. 

Customers who have purchased the vehicle claim that they made the right decision by picking Big Bear over Wolverine.

Big Bear over the Wolverine and prefer the manual-shift versions in comparison to the latest versions that were introduced.

Yamaha Big Bear 400 Top Speed

Its Big Bear top speed is 52 mph in stock form – however, it can only be averaged up to 45 mph for the majority of owners.

 The quad is intended for heavy-duty work and low-end performance There are a few Yamaha Big Bear 400 parts that you can change to boost its top performance and power delivery, as well as its appearance and off-road capability. Here are some of them:

  • New rims, taller tires, and new rims
  • 2-inch bracket lift
  • Kit for snorkeling and brand modern fuel lines (great to cross the water and dirt holes)
  • LED lights to replace Krypton bulbs
  • Winch
  • HMF Performance exhaust
  • A larger main jet inside the carburetor for greater power
  • Steel skid plates with a full belly as well as A-arm guards (if you are a frequent rock crawling)

A word of caution Performance modifications to your engine is not going to enable you to achieve the speed of 60 mph because of the gear ratios on these wheelers.

Therefore, changing the ratio of the gear is the first step you need to take. 

If you plan to maintain the direct driveshaft as well as the rims as is the only option is to buy larger wheels. 

The problem is that the tires that are larger than inches (stock for mounting) are difficult to find – you may have to pay more than $750 on customized tires and rims.

About Yamaha

Yamaha Motor Company Limited is known as a global leading motorsports company that was the birthplace of an ATV market in the 1980s. 

The Japanese continue to create an array of life-enhancing products and services, including motorcycles, off-road cars, speed boats, personal watercraft as well as outboard motors. 

The company’s goal of developing Kando can be always evident in its offerings of products and services. 

Today, Yamaha continues to innovate and excite its customers, instill confidence and build relationships to increase its product offerings across the globe.

Conclusion – Yamaha Big Bear 400

It is Yamaha Big Bear 400 is strong as nails and performs well in harsh battlefield conditions. If you’re at the top of 10,000ft under sub-zero temperatures, or in hard or rough terrain, it will always be able to provide.

t’s not an instant hotshot in the modern world. However, in its day it was among the most advanced multi-functional four-wheelers that were available. This innovative four-wheeler has and continues to gain an enviable name.

Is a Yamaha Big Bear full time 4×4?

It’s fine as a 4WD quad that is full-time. However, the riders adore it more with driveline modes that could be selected.

What is a Yamaha Big Bear 400 worth?

What’s worth the Yamaha Big Bear worth? The prices listed for the Yamaha Big Bear 400 range between $5,399 and $6,599 depending on the year of manufacture trim, as well as any added accessories. Camo-styled ornaments are among the most expensive of the options. The retail value ranges from $1,175 to $4,050 Based on Nada Guides’ pricing.

How do you tell what year a Yamaha Big Bear is?

If the VIN isn’t there, it is possible to examine the frame rails that are lower than the engine. The VIN is a 17-digit number that provides information regarding the details of your Big Bear as well as its identification of it. Determine the 10th digit in your Big Bear’s VIN. This letter signifies the year of the model.

Is the Yamaha Big Bear automatic?

The ATV is straightforward to drive due to its semi-automatic transmission. The gearbox is five speeds. However, the clutch is automated, making the whole process smooth and enjoyable.

Where do you find the year on a Yamaha Big Bear 400?

Registered. The VIN is situated on the left lower frame rail within the tire on the left. If you’re struggling to locate it, here’s the breakdown of the model year. 2000 was the first year of Big Bear 400. Big Bear 400.

What year did they make the Yamaha 350 Big Bear 4×4?

Big Bear 350 Big Bear 350 was Yamaha Motor’s first 4WD ATV model. It was introduced in markets such as Canada, the U.S. and Canada in 1986.

What kind of oil does a 2001 Yamaha Bear Tracker take?

AMSOIL Synthetic Lubricants are the ideal solution for those seeking to get the most out of the 2001 Yamaha BearTracker 250. They are resistant to the extreme stress and heat resulting from intense riding or hard work, even at extreme temperatures.

What oil should I use in my Yamaha ATV?

Kit contains the highest quality of security Yamalube 10W-40 All-Purpose Performance oil (3 Quarts) and the Yamaha genuine oil filter, and the necessary gaskets for drain bolts from Yamaha, all in one handy package.

What does Yamaha VIN number mean?

Each Yamaha car is assigned a unique identification code, called a VIN. This number contains essential information about your vehicle, such as the manufacturer, year of manufacture, production plant, engine type, model, etc.

How much oil does a Yamaha Big Bear 400 take?

3.7 quarts
The Yamaha Big Bear 400 needs 3.7 quarts/3.5 Liters of engine oil (disassembled), 3.0 quarts/2.9 Liters (oil filter replacement ), and 3.2 Quarts/3 Liters with oil filter replacement.

Yamaha Big Bear 400 4×4 FAQ

1. What kind of fuel do I need to use to run using the Yamaha Big Bear 400?

It is recommended to utilize regular unleaded gasoline, with an Octane number for the pump of 86+, and a research Octane that is 91 or more. 4 US gallons/15 liters should be enough to fill up your tank.

 Leaded gasoline is a possibility however only as an option last resort. Additionally, you should use fuel that contains lesser than 10% of ethanol, and lower than 5% of methanol because these types of fuel can harm the fuel system or cause performance issues.

2. What type of oil will the Yamaha Big Bear 400 take?

 The Yamaha Big Bear 400 requires 3.7 quarts/3.5 Liters of engine oil (disassembled), 3.1 quarts/2.9 Liters (without), and 3.2 three liters of replacement of the oil filter. 

The recommended oils for engine use include YAMALUBE 4 SAE 5W-30, 10W-30, or 20W-40, and are equivalent. API classification must be SG type or higher and should be in line with requirements of the JASO MA requirements.

3. What’s The Yamaha Big Bear worth?

The listed prices of the Yamaha Big Bear 400 range from $5,399 up to $6,599 dependent on the trims, model year, and the added accessories. Camo-styled trims are by far the most expensive of the bunch. The retail price range is between $1,175 and $4.050 according to Nada Guides pricing. Kelly Blue Book value for the 2001 Yamaha Big Bear 400 is $1,510 if you trade it in at a dealer.

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