mohammedshrine. It doesn' backfire on start up but it back fires EVERY time on deceleration. Wow, seems like every Yamaha Big Bear owner is having the same issues. 87 Yamaha Big Bear 350 issue. it is very intermittent. :17: It's an '05 with only 229 miles so it wasn't used much at all. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all Grizzly models including 700, 660, 600, 350, and 125. i have taken the carb off/apart i have 2004 250 bear tracker ran great but was making nose so I changed the camshaft it was worn and had play also changed timing chain, tensioner and guides and set valves now all I get is backfire blows the carb of the rubber boot timed up by the book always stays true to the mark and piston always comes to TDC with the mark blows the carb of the rubber boot ever time I go to start it You’ll more frequently experience an engine backfire when you suddenly reduce your engine speed too quickly. Re: Why is my 2003 Yamaha Big Bear 400 backfiring through Definitely DO NOT run this engine in its present condition. View and Download Yamaha BIG BEAR 4X4 owners manual online. wire diagram 350 yamaha quad. But, for a time, the Big Bear line was set aside from the limelight. 99. PEFI Stg 4. A forum community dedicated to Yamaha Kodiak 700 ATV owners and enthusiasts. The Big Bear wore a high-level exhaust system, with one pipe for each cylinder. Communicate with your writer via our secure Message Board. The gas in the tank might be old and it has a Black Rhino chip in Location: Finleyville, PA. The Big Bear carries full road equipment, and is basically a YDS-3, but has high pipes and a skid-plate under the engine to make it suitable for off-the-road riding. Do you know The concept of yamaha big Yamaha 1700cc XV1700A Road Star, Silverado (2004-2007) Yamaha 400cc YFM400FB Big Bear (2000-2011) Yamaha 400cc YFM400FW Kodiak/Automatic (1996-2002) Yamaha 400cc YFM400FWN Big Bear 2WD (2000-2003) Yamaha 450cc YFM450FW Kodiak/Automatic (2003-2009) Yamaha 450cc YFM450FX Wolverine (2003-2010) Yamaha 550cc YMF550 Grizzly (2009-2011) Yamaha 600cc 2012 Yamaha Big Bear 400 4x4 IRS Review Featuring a sealed wet brake for incredible durability and reliability in even the sloppiest conditions, the legendary 2012 Yamaha Big Bear 400 4x4 IRS features mid-size chassis, torquey powerful engine, 5 speed automatic clutch gearbox with reverse, independent rear suspension, on command 2WD / 4WD and Yamaha Grizzly / Big Bear Utility ATV Info. This is a new engine. Below is the riders' rating of the 2009 Yamaha Big Bear 250 motorcycle. Yamaha big bear , where to get parts, manuals? By diamonddogs Hi i bought my first atv last week, mostly for plowing. also, the starter button sometimes wont start it. $20. What it is, is incomplete combustion, fuel is left over, and shot into the exhaust pipes. 64 US gal/10 liters of regular gasoline with a pump Octane number of 87+ and a research Octane number of 91+ is enough to fill the vehicle’s tank. Hello, i have a 87 Big Bear with an issue on running in cool weather. 1 US quarts/2. 311. . IDLES FINE, but when you thrott … read more Discussion Starter · #1 · Mar 15, 2011. Unlike other models, the Yamaha Big Bear 400 IRS comes equipped with an “on command” Differential lock, making the machine a true 4×4 as opposed to 3×4 like most other models. In other words, ATV backfiring occurs due to a short, sudden instance when the engine is too lean or too rich. If you are looking for Yamaha Atv Sputters And Backfires, simply will check out our article below : 2003 yamaha big bear 400 repair manual. I'm working on a 1988 Big Bear 350 4X4 for a friend of mine. it doesnt even backfire/sputter or anything. – Encouraged for you to my blog, in this particular time I will provide you with with regards to wiringdiagram yamaha big bear 350. Tips To Prevent Backfire. I have a ESR full pipe, velocity air filter, outerwears lid, 172 main, 45 pilot, needle with clip set 5 down from top and air/fuel screw out 2 1/4. YFM25BYR. AMSOIL synthetic lubricants are the solution for riders who want the most from their 2000 Yamaha Big Bear 2x4. Big Bear 400 4x4 Black. It hadn't been run for a long tiI Ime, and one thing was to clean the carb. Find one thousand two hundred fifty-six parts within these schematic pages These exploded views give you insight on which spareparts you should probably replace. See the model variants below for more rating details. 44 Posts. Ground s hip only Bulldog Winch Big Dog Hook with 2in Receiver Mount $202. 0 out of 100. It's primary mission will be utility functions like towing my log splitter into the woods, dragging logs, hunting The 1996 Yamaha Big Bear 350 has a maximum power output of 17. INSTANT DOWNLOAD Yamaha YFM250 Big bear 250 ATV (all-terrain-vehicle) repair manual. not A forum community dedicated to Yamaha Grizzly owners and enthusiasts. The Bear Tracker takes 10w-30 or 10w-40 weight oil depending on the age, size, and I have a 2005 Yamaha Big Bear 400 - will not idle back fires high rpm through exhaust and intake, HELP!! Thanks, Kenny Bank. 2009 Yamaha Big Bear 250 rated as 76. 1999-2004 Yamaha Big Bear 250 ATV engine won’t start refers to when the motor’s crankshaft either turns but fails to start the engine or the crankshaft doesn’t turn at all. Discussion Starter · #1 · Oct 13, 2013. And today, this is actually the initial graphic: YC 5002] Yamaha Yfm350 Wiring Diagram Free Diagram from wiringdiagram yamaha big bear 350 , source:eopsy. Yamaha Big Bear 400 repair manual, commonly known as Yamaha Big Bear 400 all-terrain vehicle factory service manual or Big Bear 400 workshop manual, is a book with repair instructions on how to fix or restore the vehicle to working order. it may run for 30 min or 30 seconds. but i didnt see any videos on how to fix this issue on a big bear. Now the popping and backfiring is back at mid-throttle. Ive seen videos on the yamaha worrior 350's having similar problems. 1987-1996 Yamaha Big Bear. This machine was designed The Yamaha Bear Tracker takes 1. Cam design: Long duration cams with early opening intake valves can contribute to backfiring. is good, timing is dead on, and a new coil. parts list. It is a 1989 Yamaha 350 Moto-4. (ran perfect last time i rode it which was last sunday). With seventy-one products listed, the MIDDLE DRIVE GEAR parts diagram contains the most products. I cleaned everything up, installed the carb, and it ran, but crappy, and would leak There are many reasons why an ATV sputters. They resist extreme heat and stress from aggressive riding or hard work, even in temperature extremes. Mark This Forum Read. yamaha bear tracker 250 atv torque specs, download yamaha yfm250 repair manual, how to adjust values on a 2007 2008 yamaha big bear 250, tag archives yamaha bear tracker 250 service manual, solved yamaha 250 bear tracker 2000 the timing chain fixya, yamaha backfiring through carb 2000 beartracker sport, what is the valve clearance on a yamaha The Yamaha Bear Tracker takes 1. While idling like this, if I gave it more choke, the revs . A Big Bear 350 is an all-terrain vehicle first introduced in 1987 by Yamaha. I completed an interesting project a while back. We The Yamaha Bear Tracker takes 1. The heat from the pipes then ignites the vapor and boom, backfire. The fuel tank has been cleand and draind twice, to put new gas in it. Yamaha YFM350FWW 1989 BIG BEAR parts list. First produced in 1987, these machines and their 350cc engines were highly capable and fun to ride. when riding it will start spitting sputtering coughing then die and let out a big backfire. Since you've modified it, now you do. org. The most common reason has to do with a carburetor problem like a tuning issue, vacuum leak, or gas leak. When I opened it up to clean, there was a substance that looked like jelly in it. it was running on the trailer when he brought it, and played with it for a few mins and it seemed fine engine wise so I Big Bear Lake has two well maintained public launch ramps operated by the Municipal Water District or MWD. , Yamaha Big Bear YFM400, Yamaha Bruin 350 Yamaha Big Bear 250 models include the 2 motorcycles below produced from 2009 to 2011. If the plug looks out of sorts, replace it. It intermittently gets a good spark on initial start as it will backfire from time to time. i have taken the carb off/apart i have 2004 250 bear tracker ran great but was making nose so I changed the camshaft it was worn and had play also changed timing chain, tensioner and guides and set valves now all I get is backfire blows the carb of the rubber boot timed up by the book always stays true to the mark and piston always comes to TDC with the mark blows the carb of the rubber boot ever time I go to start it Yamaha have had their Ascot scrambler available for some time, but it is a racing machine, pure and simple, while the Big Bear is a sort of street-scrambler. DOWNLOAD Yamaha Big Bear 250 Repair Manual YFM250 YFM 250. 6 quarts of oil at each oil change and a K&N filter is recommended by Yamaha. Other sputtering issues can be caused by an ignition issue. there is an assignable cause for the backfiring and the exhaust getting red hot . well, it still will not start. Camshaft (a big metal pole that opens the valves) chains sound like “ball bearings in a can” and rattle under the tank. Again, when a CDI box is about to go bad, it can lead to misfires, issues with starting, rough running or even stall the motor. It starts and runs great in warm weather ( above 70 deg). push the button and the oil light comes Backfiring occurs when one (or more) spark plug in the ATV engine ignites the fuel when it’s out of turn in the chamber, and the exhaust valve on the cylinder is open. A repair manual is a professional book of instructions that list maintenance, repair and overhaul of the 4-wheeler's main components. 0. 2003 yamaha big bear 400 repair manual. 0 based on 3 ratings. But then dies out when idling and sputters at mid to high rpms. scoba. Attach Handle Bars. The factory Evolution engine's ignition can contribute backfiring through the carburetor. 9 liters. 99 Newly Added. $31. The launch ramps are on the north side of the lake, and the launch ramp on the east side near the Stanfield Cut-off is the Carol Morrison Public Launch Ramp and the launch ramp to the west is the Duane Boyer Public Launch Ramp. The system was first introduced back in 2001 on the Yamaha Grizzly and is now one of Yamaha’s most valued features as well as an absolute must for the serious mudder. Instant download of the factory repair manual for the Yamaha Big Bear Covers both 2 wheel drive and 44 models. The gas in the tank might be old and it has a Black Rhino chip in went to start my '02 big bear 400 last night and it wouldn't crank. I have recently picked up a Yamaha G14. This was a very heavy-duty machine, and as such there were some very interesting Yamaha Big Bear Parts & Accessories The Big Bear was Yamaha’s first 4X4 ATV. Big Bear 250 4x4 Red. not sure if these are related or not. Lubrication: The Big Bear’s oil capacity at draining is 3. 1,189. 3rd,4th, and 5th all do the same thing. YFM25BYGR. The place to discuss all the information that is Yamaha Grizzly 700, 660, 450, 350 & Big Bear ATV specific Forum Tools. If you are looking for Yamaha Atv Sputters And Backfires, simply will check out our article below : 2009 yamaha 550 big bear backfires. Motorcycles, Snowmobiles, Go-Carts, Motorized Bikes, ATVs, Electric Mobility Scooters and Golf Carts - 2000 Big Bear won't start backfires - Hi, I have a 2000 Big Bear 400. It has a 230 ccm single cylinder engine. ive had two 99s an a 01 and never had any probs with them, but ive got one in the shop, the guy dropped it off Friday said its hard to start, but once it starts it runs fine and will crank right back up. Hey everyone, I just picked up a 1989 Yamaha Big Bear 4x4 (YFM350FWW) last night and was wondering if anyone had any tips on them, things to watch out for, etc. Yamaha atv course. S. Download a manual to your computer in seconds. Twist the pin with pliers to secure the bolt on the tire. So here you go! Have a 99 big bear that runs great most of the time. Yamaha Utility ATV Parts Yamaha Motor Company's Big Bear 350 is an all-terrain vehicle. These mentioned symptoms can be confusing and one has to be careful before concluding that the problem is with the CDI. 2005 Rhino 660-Realtree Camo: Yamaha-Overfenders,Digi-Dash & Doors;Black Rhino-CDI&Steering Wheel;Superwinch-X3 Winchx4k. grizzly 125 cylinder head torque. . ;ITP-Mudlites 28"x10x12-F, 28"x12x12-R, & Polished Alum Wheels;Trail Armor-A-Arm Guards;Moose-Rear Bumper;Cycle Country-Bed Rails; Rear View Mirror;Maier-Front Splash Guards;Super ATV-Rear Tail Light Guards;DirtLights HID Conversion Kit; Billet Alum Exhaust Tip; Custom-Half 87 Yamaha Big Bear 350 issue. Cam chain rattles need to go to the mechanic but are normally not Hey guys- I was at my girlfirend's parent's farm this weekend trying to get their Bruin 250 ATV running. g. At higher rpms it sputters like it is hitting the rev limiter only you are not even close to it. well its not a bear tracker, its a big bear, but its the same engine. Location: Minneapolis. It seems to do it worse when its cold. Just not sure where I should be starting on this thing as Big Bear Dying I have a big bear 400, 2001. 1 kW (23. I have to prematurely shift in order to get any speed which tops at 1995 yamaha big bear 350, good compression 150#, carb. txt) or view presentation slides online. Yfm400fw offroad vehicle pdf manual download. Share. free 2003 yamaha kodiak 400 shop manual. Has new plug and decent spark. RED HOT IS WAYYYY TOOOOO HOT!!!!! ,,, you have probably already damaged the engine. Regularly clean your air filter – clogged up air filters Project: Yamaha 350 Moto-4. It also does it sometimes when I let off the throttle. The model numbers YFM40FBBGR, YFM40FBBL and YFM40FGBGR can be found on the left and right side panels of the unit. YFM40FBYB. Yamaha BIG BEAR Manual Online: Adjusting The Carburetor. 1999 yamaha big bear 350 backfires. Our visitor's rating for this model is 3. I have tried everything in the world! It just turns over. Yamaha Big Bear 4WD YFM40FT CARBURETOR Parts at BikeBandit. G16 Carburetor for Yamaha G16 G18 G19 G20 G21 Golf Carts 4 Cycle Engine Carb Replace JN6-14101-14 JN6-14101-15 Carburetor with Spark Plug Gasket kit December 11, 2020 NIMTEK Carburetor for YAMAHA BIG BEAR 400 YFM 400 YFM400F CARB 2000-2007 2003 Yamaha Big Bear 400 4x4 Transmission & Differential Fluid. Free Shipping on all orders over $75, U. They deliver excellent wear protection and engine cleanliness while Lift the front of the ATV and attach the two front tires. Sounds like you have developed a air leak somewhere, you shouldn't have to rejet your carb just "all of a sudden" unless you moved from sea level to the high mountains - 8,000ft. Again, if you’re experiencing this, i’d check your air filter or your engine timing as explained above. It starts fine then runs good until warmed up. Diagram 99 Yamaha Big Bear Wiring Diagram Full Version Hd Quality Ignition wiring diagram for 99 big bear 350 new free 01 yamaha bear tracker 250 wiring diagrams trusted wiring uploaded by admin on thursday january 11th 2018 in category wiring diagram. I have cleaned the carb, changed the CDI unit, replace the fuel, added stabilizer to fuel, checked for leaky intake manifold, sprayed carb cleaner around carb. Regardless, based on the YDS-3’s 246cc twin-cylinder piston-port 2-stroke engine and frame, the 250cc Big Bear Scrambler was designed for street and trail. Otherwise, you can use your multimeter to test the plug and see whether or not a spark is present. ·. Covers complete tear down and rebuild, pictures and part diagrams, torque specs, maintenance, troubleshooting, etc. Snowmobile: '17 ZR9000 Ltd. Bid for the chance to own a No Reserve: 1965 Yamaha YDS3C Big Bear Scrambler at auction with Bring a Trailer, the home of the best vintage and classic cars online. At first, even at full choke it wouldn't start. Yamaha Clutch Replacement Wiringdiagram Yamaha Big Bear 350. Tried new coil and new voltage regulator. You name it. It doesn't do after I am going faster, only about 10 mph and under. Description: Yamaha has announced a voluntary recall of certain 2005 and 2006 Yamaha Bruin 250, Bruin 350 4WD and 2WD, Big Bear 400, Kodiak 400, and Kodiak 450 ATVs, and certain 2006 Wolverine 450 ATVs. The category is atv. Posts: 1,630. I have a 1999 Yamaha 350 big bear ATV. Meaning that the engine is receiving less fuel than it requires My Big Bear 400 is having a problem. 04 (Save 26%) $149. 553. When there is enough oxygen, boom, it explodes. It's primary mission will be utility functions like towing my log splitter into the woods, dragging logs, hunting July 3, 2017 Webmaster Atv Repair Articles 6. Location: Finleyville, PA. also when i kill it under normal conditions most of the time it will pop out the tail pipe. Models. Big Bear 250 4x4 Green. Yamaha application includes 1993-1995 Yamaha Kodiak 400 ATV, 1987-1995 Yamaha Moto 4 350 ATV, 1987-1998 Yamaha Big Bear 350 ATV, 1987-2004 Yamaha Warrior 350 ATV, 1995 Yamaha Wolverine 350 ATV. It contains information on ever aspect of repair. After repeated attempts, I finally got it to idle with just a small amount of choke. Make sure the bolts are on tight and screwed inappropriately to prevent them from falling out. The 350 -- Yamaha's first ATV 4-by-4 model -- was produced until 1999, but with some modifications during its course of production. This Yamaha Big Bear 350 factory service manual was prepared using the latest data available at the time of publication. CDI teasted bad and was replaced with new, it ran fine for about 10 minutes then started acting like it was running out of gas, main jet was plugged so I had carb rebuilt and replaced manifold with new one. I have tried everything. As long as you take a close look at the mechanics behind Yamaha OEM parts for Yamaha Grizzly 700 EPS, Grizzly 660, Grizzly 550 EPS, Grizzly 450 EPS, and Grizzly 350, Yamaha Big Bear 400 and Big Bear 250 Parts, Grizzly 125 and Yamaha Grizzly 80 Parts. Posted September 19, 2011. I just bought my Rhino 660 and it has a problem with backfiring out of the carb, not the tailpipe. pdf), Text File. The ATVs are blue, green or camouflage and have black gear racks on the front and back. Buying a bike begins at Bikez! Compare the strengths and weaknesses of this bike with others before you decide on your future bike. It is hard to start when it finally starts it spits, sputters, backfires and gets hot quickly. Its a 94 yamaha big bear 4x4, with plow, new front axles, carb rebuild and some other stuff for in todays prices, i think it was a pretty good MB. Other parts of the ignition system, including the ignition coil and capacitor repair manual, timing marks yamaha bear tracker 250, yamaha backfiring through carb 2000 beartracker sport, yamaha beartracker 250 workshop service repair manual, 2001 yamaha bear tracker 250 atv torque specs, yamaha atv repair manuals, yamaha yfm250 beartracker service manual inst by, yamaha yfm250 service manual, horrygeorgetowntech org Yamaha Big Bear 250 models include the 2 motorcycles below produced from 2009 to 2011. This Yamaha Big Bear 350 manual also includes part inspection, maintenance intervals, unit repair and Yamaha Big Bear 350 factory specifications (e. 105. If I run 35mph or faster and then decrease throttle coming downhill or to a stop it'l pop several times. went to start my '02 big bear 400 last night and it wouldn't crank. 2. Lot #46,685. I love old machines! These bikes were the predecessor to the 2WD version of the Big Bear. Search: Yamaha Atv Sputters And Backfires. In most cases, these issues can be fixed by making a few adjustments or performing routine maintenance. It was introduced in 1987 in two colors -- red and white. Yamaha YFM350FWW 1989 BIG BEAR. Leave text messages, have answers from your writer, and be in the loop regarding the Yamaha Moto 4 & Big Bear 1987 2004 (Clymer Motorcycle Repair)|Penton Staff current order progress. Have a 99 big bear that runs great most of the time. It will rev in neutral fine and 1st gear, but I barely give it fuel in 2nd and it starts backfiring and guys behind me said they can see black smoke. I also include the 176 page, BIG BEAR 400 Owners manual which details out all the normal maintenance procedures and ATV functions. 24 (Save 26%) $145. Regularly clean your air filter – clogged up air filters My Big Bear 400 is having a problem. Hi Everybody, I'm new around here so please bear with me. Without seeing/hearing sled, seems like exhaust stream is rich with unburned fuel which then gets into exhaust pipe and muffler. It starts really hard and I have a brand new agm battery. or higher!!. When the fuel pump has a problem, spark plugs Backfiring happens all the time, in cars and bikes, you just don't hear it because the muffler/exhaust. Filed under: Project: Moto-4 — Nicholas Fluhart @ 6:16 pm. DOWNLOAD Yamaha Big Bear Repair Manual YFM ATV INSTANT DOWNLOAD Yamaha YFM Big Bear ATV (all-terrain-vehicle) repair manual. - Yamaha Big Bear Service Manual5(16). big bear 1991 service manual download ozark 250 shift fork replacement yamaha yfm 350 2003 how set timing how to bleed rear brakes on 2001 yamaha badger removing piston head from 300 yfm yamaha carburetor diagrams yfm400 stroke carb diagram 1985 yamaha big bear starter drive repair yamaha big bear 400 Apr 08 Yamaha Big Bear 350 Repair Manual - Yamaha Big Bear Service Manual - Free ebook download as PDF File. 6 out of 5 with 3 votes. By 1989 Yamaha 350 Big Bear 4x4 - all original Past ATV's, All Great Machines 2014 Sportsman 850 LE Pearl White 2013 RZR 800 LE Nuclear Sunset 2013 Sportsman 500 HO Bright White-july 2014 atv of the month 2008 Sportsman 300awd LE Pearl White 1995 Xplorer 400 Green 1992 Honda Fourtrax 300 Blue 1986 Yamaha Moto4 225 Blue 1986 Honda Fourtrax 350 Red The Right Synthetic Motor Oil for Your 2000 Yamaha Big Bear 2x4. YFM25BYB. Enthusiasts sometimes overlook ATV transmission and differential maintenance. 8 models Bulldog Winch Yamaha Grizzly / Kodiak Winch Mount As Low As (Save Up to 26%) $69. This was the issue with my friend’s ATV. Yamaha Big Bear 400 repair manuals cover every aspect of repair—whether […] Sometimes, a bad CDI does not cause sparks at all. Joined Aug 4, 2006. Discussion Starter · #1 · Nov 30, 2008. 330. Below is a list of make, model and vehicle identification numbers (VIN) involved in the recall. YAMAHA BIG BEAR 350 Workshop Repair Manual Diagrams Shown are for U. Country: USA. Come join the discussion about reviews, trail riding, performance, modifications, troubleshooting, maintenance, classifieds, and more! Look for any corrosion or gunk on the plug itself, and ensure that there is a small gap present in the spark gap of the plug. The Bear Tracker takes 10w-30 or 10w-40 weight oil depending on the age, size, and 87 Yamaha Big Bear 350 issue. This kit includes critical Genuine Mikuni parts including the needle valve, fuel screw assembly, side diaphragm and other related items to return your I have a backfiring issue with my 14 XTX. torque spec, part specifications, etc). However if I park it in the shade or try to start it in the morning or evening when the weather is cooler it's hard to start and if you try to accelerate it it just sputters and backfires. For the combustion chamber to work on an ATV, it needs air, gas, and a spark. Big Bear 250 4x4 Black. Open and Print this schematic Link to this schematic Home Full Page. Yamaha Service Repair Manual Free PDF xt, ybr, fz1, fz6, fjr, yzf, ttr, wrr, qt50, yzf, virago, wrf, tzr, xt Yamaha YFMFW Big Bear 44 Download Yamaha YFMX Warrior Download Yamaha YFM Big Bear Download Yamaha YFM Big Bear. This article details the main reasons why a Yamaha Big Bear 250 will not start and what should be check to resolve the 2009 Yamaha Big Bear Parts. The carburetor should be checked and, if neces- sary, adjusted at the The adjustment. Yet Yamaha had never won a Big Bear, and some wondered what right the company had borrowing the name. Then, in the year 2000, they created the Big Bear Buckmaster edition. Check the tire pressure to make sure it is appropriate to the size of the tires. Bulldog Winch Winch Mount Kit for Jeep CJ and YJ $196. The words Yamaha Big Bear can be found on both sides of the Fourtrax 300 motor Yamaha big bear 250 frame? By 1994 Yamaha Timberwolf 250 Headlight Assembly 84' XR500R has symptoms erratic and backfiring throttle. I have a 2007 YFZ450. If you are struggling with backfires, check your spark plugs and the ignition advance to verify the tune-up is correct. I can get it to run but spark seems weak. i have changed air filter coil plug fuel filter and cleaned the carb. YAMAHA YFM400 BIG BEAR ATV Service Repair Manual. Buy OEM Parts for Yamaha, ATV, 1999, BIG BEAR 2WD - YFM350UL Find parts for your Yamaha Grizzly 700, Grizzly 660, Grizzly 450 and Grizzly 400, Yamaha Big Bear 400 and Big Bear 250 Parts, Yamaha Grizzly 350 Automatic, Grizzly 125 Automatic and Yamaha Grizzly 80 Parts. Using a properly formulated transmission fluid or differential fluid for your Yamaha Big Bear 400 4x4 can protect your ATV from costly problems down the road. You’ll more frequently experience an engine backfire when you suddenly reduce your engine speed too quickly. Description: The recalled vehicles are four-wheeled 2012 Yamaha Big Bear 400 ATVs. Intake manifold air leak: A lean condition due to an intake manifold air leak can cause backfiring. 2PS) @ 6,500 RPM. The 2011 Yamaha Big Bear 250 motorcycle is used as an example on this page. I bought it in Nov and have only put 600miles in it. This is the full Yamaha BIG BEAR 400 Service Repair Manual. Recently my grizz has been popping/backfiring back through the carb at low rpms. I have to prematurely shift in order to get any speed which tops at Hi Everybody, I'm new around here so please bear with me. With the earlier versions as well as the later versions, 1997 and above, there are a handful of problems that riders can and may experience. Do you have an opinion about the engine performance, reliablity YAMAHA BIG BEAR 250 Service Repair Workshop Manual 1999.

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