The Yamaha big Bear 400 to be a tough and reliable quad that could get the project done. Its premium power was a perfect trade-off for top-end speed, and also its rugged appeal, towing capabilities, and also mighty engine were a large hit through consumers. World adored this wheeler, also with that imperfections.

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Often compared to a Fourtrax 300 and also confused through a Wolverine, the Yamaha large Bear 400 do itself quite a complying with during its 12-year production run. Sporting a mid-size chassis, dual driveline modes, smooth transmission, and a powerful engine, the large Bear to be a breakthrough because that Yamaha.

The quad stayed true come Yamaha’s reputation of producing reliable and also durable vehicles until the an extremely end – so lot so the a the majority of Yamaha enthusiasm were saddened by the discontinuation the the model in 2012. This check out will enlighten friend on why the huge Bear is for this reason well-loved through consumers, as you learn about its specs and also features, highs and lows, and more.


The Revolutionary 4×4

The Yamaha big Bear 400 is the 17th version released through Yamaha due to the fact that its 1980 Tri-Moto released in the U.S. The Yamaha large Bear 400 was initially designed for work and carried the very same terminology together its 1987 350-class predecessor. It was no the an initial ATV to have actually 4×4 specifications, yet it counter it by being the first with fully camouflaged bodywork, do it famous as a searching vehicle. The four-wheeler was created from 2000 to 2012 before it ceased manufacturing to develop the remainder of Yamaha’s ATV lineup.

Yamaha obtained busy during the large Bear’s production run, developing several various trims across all design years:

Yamaha big Bear Trims

2000 Yamaha big Bear 400YFM400FWNM-FWNMC-FWNHM (4WD Buckmaster)YFM400M-NMC (2WD 4WD)2001 Yamaha large Bear 400YFM400FHN-FN (4WD Hunter)YFM400HN-N (2WD Realtree)2002 Yamaha large Bear 400YFM400P-HP (2X4 Hunter)YFM400FP (4X4)2003 Yamaha big Bear 400YFM400FWR (4X4)YFM400NR (400 2WD)2004 Yamaha big Bear 400 (YFM40S 2WD)2004 Yamaha huge Bear 400 (YFM40FS 4X4)2005 Yamaha large Bear 400 (YFM40FT 4X4)2006 Yamaha large Bear 400 (YFM40FV 4X4)2007 Yamaha huge Bear 400YFM40FBEW-FBHW-FBW (4WD Hunter IRS exploring Edition)2008 Yamaha huge Bear 400YFM400FBHX-FBXGR-FBXL-FBXR 4WD2009 Yamaha large Bear 400 (FM400FB 4WD)2010 Yamaha huge Bear 400 (YFM400FB 4WD)2011 Yamaha huge Bear 400YFM400FBAGR-FBAL-FBHA large Bear 4WD2012 Yamaha huge Bear 400 (YFM400FB 4WD)

If there is noþeles that finest signifies the carrier surname of this model, the is the engine. The strength mill the this quad is similar to a V8 fitted right into a mid-size 4×4. It has a dirt bike-style BSR33 carb, a 4-gallon gas tank, a big oil-cooler, and a CDI ignition. Top top the outside, the quad’s functional plastic fenders are indestructible, straightforward to clean and offer sufficient splash protection. Front and also rear bumpers protect the mechanically components, and also racks administer plenty that cargo space. Electronics and also fuses room under the seat, along with the airbox and also battery.

2000 Yamaha huge Bear 400 Specs (YFM400FNM)

Engine– it is it is provided by a four-stroke, air-cooled, single-cylinder SOHC engine. The forward-inclined strength mill has a bore-stroke ratio of 83 × 71.5 millimeters (3.27 × 2.82 inches). The Yamaha huge Bear 400 4×4 has actually an engine displacement of 386 cubic centimeters, a compression proportion of 8.6:1, and also a wet sump lubrication system. A 33-mm Mikuni BSR carburetor handle the air-fuel mixture. Fuel tank volume is 3.96 united state gallons/15 liters, through 1.06 us gallons/4 liters reserve.Brakes– Front twin hydraulic disc brakes and also a sealed mechanical drum at the rear carry out the huge Bear preventing power.Suspension– The quad functions an live independence double-wishbone front and also swing eight rear suspension v five-way preload-adjustable shocks because that both that permit 5.9 inches of wheel travel. The 2004 Yamaha large Bear 400 had high-quality Showa spring/shocks front and also rear. For every models, the vehicle’s IRS gives maximum ground clearance and also excellent maneuverability on diverse terrain.Dimensions– The quad’s all at once dimensions are 79 x 43.7 x 46.1 customs (2,007 x 1,111 x 1,172 millimeter – together x W x H). The minimum floor clearance is 9.65 inches, when the minimum transforming radius is 124 inches. The vehicle wheelbase is 48.4 inches. Curb weight is 266 Kg/586 lbs. Towing capacity is 904 lbs/410 Kg, add to 265 lbs/120.2 Kg merged rack capacity.Exterior– that is consisted of of a steel tube structure (with a 4° caster angle and 21-mm trail) and also plastic human body material. The full floorboard is ~ above the driver’s side. The wheeler comes v standard handgrips, fenders, prior A-arm skid plate, and also front/rear bash plates. Instrumentation is composed of a trip odometer, speedometer, and also temperature/fuel indicators, and also you will discover 88 lbs/39.9 Kg precious of extra warehouse under the seat.

The Yamaha large Bear 400 had actually 30 trims during its 12-year manufacturing run based upon online references and research.

What huge Bear owners Love around Their Quad

Big be afflicted with owners have a thing or 2 that they love about the vehicle. Because that some, the is the auto clutch manual change and five-speed transmission. Because that rock crawlers, the is the at sight low very first gear. It is the lack of a CVT belt (according come them, these belts require an ext to maintain). And also for the working John, the is the wheeler’s mid-range power and also towing capacity.

Riders appreciate lacking out on having actually a turbo lag once letting off and also quickly getting earlier on the throttle. Farmer marvel at the quad’s capability to traction 12-foot logs with no difficulty. Civilization who have actually bought the vehicle say that they make a great choice in selecting the huge Bear over the Wolverine, and also most favor the manual-shift transmissions over the more recent trims that come out.

Yamaha big Bear 400 top Speed

The big Bear peak speed is 52 mph on stock – yet only averages as much as 45 mph for many owners. While the quad is meant for difficult work and also low-end grunt, there space a few Yamaha large Bear 400 parts that you have the right to upgrade to improve its top-end speed and power delivery and its look and off-road readiness. Below are a couple of of them:

2-inch clip liftSnorkel kit and brand-new fuel lines (great because that water crossing and mud holes)LED lamp to change the Krypton bulbsWinchHMF power exhaustBigger main jet in the carburetor for more powerFull ship steel skid plates and also A-arm protectors (if you execute a most rock crawling)

A word come the way – performance mods to her engine will certainly not do you hit a top speed of above 60 mph as result of the gear ratio on this wheelers – meaning transforming the equipment ratio is the foremost point you have to do. If you intend to save the straight drive shaft and rims stock, the only way to walk is to obtain bigger tires. However, tires bigger 보다 25″ (stock to mount) are tough to come by – girlfriend may finish up spending end $750 for custom rims and also rubber.

More around the large Bear

What fuel should I use for the Yamaha big Bear 400? You should use continual unleaded gasoline v a pump Octane variety of 86+ and a research study Octane variety of 91 or higher. 4 us gal/15 liters must be sufficient to fill your tank. Leaded gasoline deserve to be used however only as a critical resort. Also, usage fuel with less than 10% ethanol and also less than 5% methanol, as these variants may damage the fuel device or cause car performance issues.How carry out you change the oil top top a Yamaha huge Bear 400? Before friend start, make certain to have actually a socket wrench set, one oil catch basin, brand-new oil, and a filter. Once you have these, friend will very first have to park your ATV ~ above level ground, access the drain plug close to the bottom that the oil pan, drain out every the oil, screw a brand-new oil filter in place, to fill the device with the recommended amount of oil, then begin your ATV and also check the the oil gauge is in ~ the normal range.Does the Yamaha huge Bear 400 have actually flaws? For secondhand huge Bear purchases, the wheeler would certainly naturally have actually washed-out plastics and rusted racks. Aftermarket brake shoes room too little for the rear drum. Furthermore, some big Bears endure recurring, uncertain battery drain.Where is the VIN on a Yamaha huge Bear 400? The VIN is situated on the steering obelisk stamped on one aluminum plate. If girlfriend cannot discover it there, look at on the left next of the framework behind the former tires or the lower structure rail beneath the engine.What is the Yamaha large Bear worth? The perform prices that the Yamaha large Bear 400 selection from $5,399 come $6,599, relying on model year, trim, and included accessories. Camo-styled trims room the many expensive of the lot. The mean retail worth is in between $1,175 and also $4,050 based on Nada travel guide pricing. Kelly Blue publication value for a 2001 Yamaha huge Bear 400 is $1,510 as soon as trading in at a dealership.

About Yamaha

Yamaha engine Company restricted is known as a people leader in motorsports that has actually spawned the ATV market in the ’80s. The Japanese continue to develop a vast array of life-enriching products and services – consisting of motorcycles, off-road vehicles, personal watercraft, rate boats, and outboard motors. The mission the creatingKandois ever-present in the product offerings and also services. At present, Yamaha continues to innovate, excite, inspire confidence, and strengthen ties to increase its offerings worldwide.

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Conclusion – Yamaha large Bear 400

The Yamaha huge Bear 400 is difficult as nails and thrives under battlefield conditions. Even if it is you room on 10,000 feet the elevation, in extremely high or sub-zero temperatures, or top top slick or coarse terrain, the never falls short to deliver. It may not be a hotshot by today’s standards. Yet during its time, it was one of the most innovative multifunctional four-wheelers ~ above the market. This revolutionary four-wheeler has and continues to knife itself a amazing reputation.