Yamaha big bear 400 wont idle

Yamaha big bear 400 wont idle. Also checked boot from carb to cylinder. What causes bad idles and spits back through carb and exhuast - Answered by a verified Motorcycle Mechanic. Dec 7, 2020 ยท The Big Bear 400 had a plugged primary jet and would not idle unless choke is on. A few customers complained about the 2003 Yamaha Big Bear 400โ€™s carburetor problem. 4. Remove the choke plunger from the carburetor and see if it is still hooked up and moving on the cable like its supposed too. Jump to Latest Follow 9K views Dec 24, 2010 ยท 11. Check Details Yamaha big bear 400 wont idle. Be the first to answer Apr 07, 2014 โ€ข Yamaha 2007 Big Bear 400 IRS 5-Speed 4X4 yamaha big bear 400 wont idel and the red revers light blinks - Yamaha 2007 Big Bear 400 IRS 5-Speed question. Throttle stop screw. You can start to rev it up and o ce it hits a certain RPM it hangs there Oct 7, 2014 ยท Atv big bear 350 won't idle after cleaning. I just put a brand new battery in it and starter solenoid. Oct 22, 2015 ยท 2008 Yamaha Big Bear 400 I. or higher!!. If your battery is in good health and holds its charge when not connected to the ATV, but itโ€™s being drained overnight when connected, and the ATV is just sitting with everything in off-position, something is drawing current. My notes also say Yamaha 3AJ-24534-01 and 3AC-24523-00-00 and plunger O ring 4mm id by 2mm thick are the seals needed. Front Brakes Get Stuck; 4. SOURCE: set the timing on a yamaha 250 bruin 4-wheeler. S. 2003 Grizzly 660. Jul 21, 2008 ยท Hey BC, did you get her going. Hello all, I am new to this forum and joined in search of some answers. Top speed if you have stock tires should be pushing about 67 or so. (that is the largest jet hanging the lowest in the carb bowl with the largest hole in it. It does this sitting still or moving so I do not suspect wiring. Fully loosen the adjusting nut on the brake cable. If I hit the gas with choke off, it would just die, not rev. If it doesn't run with the starting fluid then you probably don't have any spark and you have to start looking elsewhere. . Replaced it, then found that there was no spark. Among these reasons are a carburetor leak, throttle cable placement, idle screw setting, clogged pilot jet, and many more. 5K views 1 year ago. Now, pull the brake handle. I noticed a strong gas smell, took cover off air box and found 2 inches of gas in the box. Another thing you can do is try a shot of starting fluid. is putting gas out thru the overflow hose on the bottom it quits when i throttle up the engine a lil bit but starts again when it returns to an idle . Sometimes a switch goes bad. even with a new battery it still struggles. Feb 20, 2015 ยท Hello All, I am new to the forums and in search of an answer. To get it to come on I have to wiggle the foot shifter and hold it in just the right spot. May 25, 2017 ยท That is the shark fin looking thing on the front of the air box lid. I drained the tank cleaned it out, removed the carb tore it apart and cleaned it as well as a new plug. Previous owner thought it was a carb problem, so he ordered a new Zoom carb and new intake boot, but it still had the same high idle. My buddy has a 2000 (i believe. Here's what I've done so far: 1. 18 in). The battery shows to be 100% charged. When you turn on the key, the green light and the red light should light up, then the red light goes out after a few seconds, but the green light should stay on. 08 Big Bear 400 - Engine cuts out at idle and low RPM. It only has 16 miles on it and looks like new. When its cold or has been sitting for long enough to cool down the bike starts up first try with no problem. Aug 14, 2010 ยท 2. Dec 10, 2022 ยท Why won't your 1990 Chevy idle? 1990 gmc p/u 5. it wasn't long before the bike was difficult to start. Yamaha big bear 400 2 inch lift kitLifted yamaha big bear 4x4 Bear big yamaha 2000Yamaha big bear 400 specs. Allowing an ATV to idle too high could lead to premature wear and tear. Reset the idle speed screw as necessary after obtaining the correct idle mixture. Little cold natured, but starts easy enough on full choke, and as it warms up you can back the choke off to a normal idle. Sep 20, 2019 ยท 7 posts ยท Joined 2019. Posted April 24, 2011. Apr 6, 2010 ยท Having acarb isuue w/beartracker ,will only idle w/choke. It's just dirty in the carb I think. Apr 13, 2009 ยท 03 Kodiak 400 Stalling Out. May 10, 2022 ยท 8. com: 2000 yamaha big bear 400 parts. An ATV idling high should not be left unresolved. Dec 3, 2011 ยท Yamaha ATV Forum. 2002 yamaha big bear will start with the pull rope but when I push the start button to start it the netual and reverse lights get very dim. 25"x10"x12" Maxxis Bighorns / SS108's on all Corners Ricochet Skid Plates / Custom Floorboard Skid Plates Custom Receiver Hitch Warn XT30 / Custom Mounting Plate & Hook Catch Rigid Industries Dually LED Lights & HID's Custom Front Rack / Drop-Basket Rear Rack-----1997 Kodiak 400 Nov 22, 2023 ยท Mdu resources surplus auction2003 yamaha big bear 400 4x4 $2,000 or best offer Yamaha big bear 400 4x4 irs (2010-2011) specs, performance & photosMagneto stator ignition coil for yamaha big bear 400 2000 2001 2002. I figure this has to be a carb problem but hoping someone can pinpoint exactly what to look for/replace. 1. I have a 1997 big Bear 350, bought new in 97 with no modifications. Share. I have cleaned the air filter, adjusted the valves, changes the gas and tried to clean the carb. 44 posts ยท Joined 2006. Basically, she'll start up fine and idle around 1500-2000 rpm (full choke) but upon going to 1/2 choke or giving her any throttle, she dies. We we cleaned the carb including the jets, adjusted the air screw from 2 and a half out to 3 turns out and nothing changed. #2 ยท Nov 10, 2018. If I try to go anymore it coughs,sputters and backfires terribly. Nov 28, 2012 ยท Posted November 28, 2012. Kawasaki 43049-1066 supposedly fits. 5 is 4KM-14142-17-00. THE PROBLEM: After my ATV warms up it takes a few trys to get it to start, once its started it runs fine. Mar 29, 2011 ยท Sometimes races, sometimes just cuts out. Posted December 24, 2010. I went thru the whole carb twice, float Nov 30, 2008 ยท grizzlyhunter660 Discussion starter. 1995 Big Bear 350 4x4 --- 30" backs, 3" lift, stick Apr 22, 2010 ยท QUADCRAZY Classifieds. Now repeat the process and dont forget to check the master cylinder to add fluid while bleeding the system. Youโ€™re going to place the meter leads to the pins in the connector. hard to start wont. โ€. The machine starts very easily at all times Mar 12, 2013 ยท Check your front and rear differential fluids. I have re-built the carb, replaced ignition coil, new plug, new plug cap, cleaned gas tank, fresh gas (obviously. Sounds and feels like you turn off the key and then right back on. Posted on May 01, 2010. after putting it back together it would not May 18, 2014 ยท The O ring on the plunger can be replaced or sometimes just turned over and the seat cleaned up. 2) Turn off the petcock and drain the carb. Idle 4x4 wont jetting wayBear yamaha difficulties 2010 yamaha big bear 400 top end rebuild part 12003 yamaha big bear 400 atv. I have a 2000 big bear 400 4x4 that i just installed a snorkel on and now the carb. 3) Try it. If the engine dies, use the Idle Adjuster screw to keep it going. Meaning that the engine is receiving less fuel than it requires Nov 29, 2023 ยท Yamaha big bear 400 (2009-2010) specs, performance & photosWheelers lifted atv atvs hitch dirtbikes Auctiontime. Feb 5, 2023 ยท So I have a 2002 Yamaha Big Bear 400. It will do it if its idling, or if Im driving it. 43 posts ยท Joined 2012. I rebuilt carb and cleaned countless times. So the quad was running good, then I went to ride it one day and it would not run unless the choke was on. com/ Yamaha kodiak 400 wont start refers to when the all-terrain vehicle will not start up or activate and begin to work. Checked fuel, spark plug, and coil โ€“ confirmed spark. Could it be the idle jet id clogged again some how? It pushes the carb out of the intake hose after it spits back 4 or 5 times. I tore the whole carb down and it was all gunked up. #1 ยท Dec 7, 2007. Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Apr 4, 2017 ยท Turn each one inward until it GENTLY seats. #1. Difficult to Start; 3. 4) Start it with the choke on and put your hand over the air filter hole. after working great all weekend today my big bear 400 wont start. gravity bleed. Hey there everyone. Oct 7, 2013 ยท differential rear yoke repair The yoke on rear differential broke I need to know how to replace it. The engine idle rpm also plays a role in good shifting. Apr 25, 2014 ยท 02 Big Bear 400- Hi-idle & backfires while running. It wont idle with the choke in the "off" position even with the engine fully Jan 30, 2019 ยท SOURCE: yamaha big bear 400 will Sounds like a problem with the starter, could be a starter fuse, relay or solenoid. For a while I did not mind and used the pull start, now I want to get it fixed. I had a weed seed in my jet :wtf: How it got there is one thing but my bike started ,idled, but die as soon as I hit the throttle. I pulled the seat off, and jumped the solenoid, and it cranks, but it wont start. Oct 21, 2015 ยท #1 ยท Oct 21, 2015. There will be a number stamped on the side of the jets. sounds like your mixture was leaned out because ur filter was cloged up making it run rich so was adjusted by screwing air screw out, now uv cleaned it, adjust it to make mixture richer by screwing back in until runs smotherly. It wasn't running right and had a high idle. Did anyone get any ideas? I also put a used FMF pipe on it and know I need to re-jet it. May 24, 2015 โ€ข Yamaha 2007 Big Bear 400 IRS 5-Speed 4X4 Most newer engines use an electronic ignition system, if the spark is weak verified at night (in the dark) by removing the spark boot and watching the arc jump onto the engine block, then this could be your problem. After the replacement, compression improved to 125psi. It is located on the side of the carb, requires a 12mm wrench to remove, and the nut is black plastic. I cleaned the carb, made sure all the jets were clear, changed the plug and drained all the old gas out. It is helpful to number them mentally for this. The longest Ive gotten it to run is about 20 seconds. 6. the cam lobes facing away from the lifters. Posted by Anonymous on May 30, 2012. Nov 22, 2009 ยท Yamaha. The one for the Big Bear was $39 and the TRX $42. I have tried everything to try and stop the fuel leaking out the overflow but its still happening. They expressed dissatisfaction because one of the needles was entirely gone. I also tend to open up the "starter" jet a little. Nov 8, 2012 ยท That way when it gets warmer out, it'll be real close. Back each one out one and one half turns. 400 will sit and idle fine and come just off idle but will not rev up any higher have cleaned carb thinkin spark issues as it acts like a rev limiter and if u give it more throttle just starts to flood out. RED HOT Yamaha big bear 400 4x4 motorcycles for sale2001 yamaha big bear 400 oil capacity Yamaha big bear 400 carburetor diagramAmazon. Idle wont almost alreadyCk powersports Yamaha big bear 400 professional 2006 4x4 4wd no vat farm quad bike2001 yamaha big bear 400 oil Jan 13, 2019 ยท SOURCE: have a 04 yamaha big bear 400. The selector seal can also be replaced. when I got it the bike had been parked with fuel in it and just left. Check Details. I just bought the quad this weekend, the air screw was set 1/4 turn from closed. The carbs are made in China. I took off the carbs for inspection and cleaning. New wheel bearings may be in order and cleaning out the clutch. Pictures and Videos Board. 2005 big bear 400 4x4. This is known as โ€œparasitic amperage draw. Yamaha big bear 400 4x4 irs (2010-2011) specs, performance & photosRatings reviews Yamaha big bear 400 auction results in north vernon, indiana2008 yamaha big bear 400 irs $3,000 possible trade. If it runs for a few seconds with the starting fluid and then dies you definately have a fuel problem. Apr 18, 2014 ยท have a 2000 big bear 400, It has been sitting for a while due to my rear boot tearing and the bearings going out in the rear axel. If compression may be to blame, what should it be? when cranking manually, it seems effortless. 2007-2012 Yamaha big bear 400 4x4 irs service manual. Also, no cracks in the boot. Submitted. This video outlines factory procedures for adjusting idle speed on the following 2007 2008 2009 2010 Yamaha Big Bear 400 Problems . Inspecting your spark plugs can help diagnose the nature of the problem preventing your ATV from idling correctly. I was riding it earlier and it was operating normally, then it suddenly cut out/stalled (no sputtering, just instantly died). R. Having acarb isuue w/beartracker ,will only idle w/choke out. It seems to do it worse when its cold. It hangs for a moment and then drops down to idle speed. I cleaned the plug and it would run fine for a few days, then I had to clean it again. Dec 7, 2007 ยท 22 posts ยท Joined 2007. ran great, snorkeled it and tuned the snorkel so no mixture adjustment was necessary. May 22, 2012 ยท 2000 Yamaha Big Bear 400 Getting Stuck in Reverse By Gwbarm My Yamaha Big Bear shifts through all the gears good, goes into reverse smoothly, but when i go to get out of reverse it takes a lot of effort to get it back to first gear, and even then it does not go very smoothly, have to pull up on the pedal really hard, anyone else ever had this There are many reasons an ATV may be idling high. May 17, 2008 ยท When the motor is up to operating temperature, set your idle speed screw to a stable idle. Turn the throttle stop screw clockwise to increase idle, counterclockwise to decrease idle. I'm working on a big bear 400. It won't idle unless i have the choke on just a little. Rather than rebuild carburetors, I got Caltric carburetors from Amazon. ) After revving the bike, it takes a while to return to idle. Hi, first time user here. Youโ€™ll test each combination of pins. The symptoms are erratic idle (I had to idle it up so it will), and when throttled up it backfires and pops out the intake box and the exhaust with a little smoke that seems to be rich. In the process of figuring that out, they jumped it off a car trying to start it, then found the starter was bad. Otherwise, you have a carburetor issue which is very common in ATVs. Turn the multimeter to ohms. it will rev up with the choke closed but as I said it just May 20, 2012 ยท nick_386 Discussion starter. You should see the three wires of the same color running out of the stator to the connector. Check the pilot and main jet sizes. I own a 2008 Big Bear 4x4- A year ago when I purchased the quad, it started fine, and then eventually the electric start stopped working. When I push the start button, all that happens is the oil temp light flashes. These are the most common symptoms of Yamaha Big Bear 400 problems: 1. could be a 99 or 01, i'll find out for sure) big bear 400 that had a bad starter. Either way, best thing to do is remove the cable altogether and get rid of that stupid lockout. In other words, ATV backfiring occurs due to a short, sudden instance when the engine is too lean or too rich. I have a 2003 yamaha big bear 400 4x4 and recently rebuilt the motor. 1994 Big Bear 400 4x4 --- 28" laws, hl 2in lift, stick stoppers, snorkel. Jul 12, 2014 ยท 2001 big bear 400 backfiring and popping. We all assume that something fried Sep 25, 2018 ยท https://www. Jul 27, 2019 ยท Backfiring occurs when one (or more) spark plug in the ATV engine ignites the fuel when itโ€™s out of turn in the chamber, and the exhaust valve on the cylinder is open. Feb 17, 2012 ยท 1508 Answers. Clean the air filter and starter plunger. Apr 13, 2014 ยท 2008 Yamaha Big Bear 400 I. 4wheeler nut Rookie. The start cicuit wiring could also be damaged. Category. Cannot get it to start with the hand brake or pull rope either. Loosen the lock nut ans turn the screw all the way in then back it out till it gets tight then tighten the lock nut and that should solve your problem. Start is defi Aug 19, 2007 ยท 1. Have a friend kick the bike while you watch for spark. crack open the bleeder screw and let the brake fluid drip until no bubbles. Does fine at idle and full throttle. Its best to bleed the breaks with 2 people makes it much easier. It doesn't do after I am going faster, only about 10 mph and under. 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. If there is no pressure or has bleed down, the master cylinder is kaput. Something drains the battery overnight. My 91 Big bear will only idle on half choke. A black, dry, and sooty-looking spark plug may indicate a rich fuel mixture. any read more. The plunger may need to be rebuilt or replaced. Now tighten the bleeder and release the lever. :smooch: My warrior runs good now. Frequent Issues with Carburetor. My 01 660 was running fine. After reconnecting the starter relay, the next step is to check the brake light relay. As the engine is running and you have your hand cupped over the opening, press the throttle to see if the popping gets worse Disconnect the stator cable. 25"x10"x12" Maxxis Bighorns / SS108's on all Corners Ricochet Skid Plates / Custom Floorboard Skid Plates Custom Receiver Hitch Warn XT30 / Custom Mounting Plate & Hook Catch Rigid Industries Dually LED Lights & HID's Custom Front Rack / Drop-Basket Rear Rack-----1997 Kodiak 400 Dec 10, 2023 ยท Background: My Big Bear was running fine not too long ago, but it unexpectedly cut out on me. After all that you should just about have a new machine and you should be able to do it all yourself if you are mechanically inclined. Apr 20, 2012 ยท SOURCE: no front brakes on 95 yamaha big bear atv. Posted March 11, 2009. Sounds like that should solve the problem. Then use either your idle fuel or air screw to obtain a stable idle. Got the bike brand new in July of 2009. Andone might be sticking. Hi I'm a new user in desperate need of help. Sep 08, 2013 โ€ข K and N Yamaha Big Bear Yfm350fw Air May 7, 2005 ยท When you hit the throttle, your sucking crap up and cutting off your fuel. Frequent Issues with Carburetor; 2. I also have used fuel treatment. It is an 02 big bear 400 2wd. Posted August 14, 2010. Gas in Air Box ; Which Year Yamaha Big Bear 400 Has the Most Problems? Tips for Buying a Used Yamaha Big Bear 400; Yamaha Big Bear 400 Users Feedback/Reviews; Technical Aspects of Yamaha Big Bear 400 Mar 11, 2009 ยท Current Bike (s):1981 Yamaha XS400 Special 2. Cleaned it in carb cleaner for days. Jul 7, 2012 ยท ATV Racing & Events. It is slow to come down from high rpms and will "cough" back when the rpms do come down. Nov 21, 2019 ยท SOURCE: have a 04 yamaha big bear 400. View File. Father in law picked up a used 2000 BB400 4x2 - motor runs well, no smoking. If you can pull-start the motor, and it runs fine, you have pretty much eliminated any problems with the motor. I don't remember the circumstances. When I turn the switch on the relays are slow to click compared to normal. Mar 31, 2018 ยท First thanks for any help guys, new to the forums and it's gotten me this far. When I finished it started right up and sounded great. #1 ยท May 20, 2012. Both suffered black plug. It is best to adjust the idle while at operating temperature Dec 6, 2019 ยท 2008 Yamaha Big Bear 400 neutral light not working most of the time. A few months ago it started dry fouling the plug. Turn the adjusting nut on the brake rod adjustment until the free play is 20โ€“30 mm (0. I've cleaned the carb several times. I was given the bike after it was laid up for a year or more under a car port. However, I've had great success with them in numerous applications. Next check for dirt or water in the main jet of the carb. It starts, runs for a bit, then suddenly stalls. Yamaha big bear 400 wont idle. Oct 8, 2011 ยท 5 posts ยท Joined 2011. I recently purchased a 1997 Kodiak 400 4x4 the bike had been sitting for about 2 or 3 years. Good morning all. even after the motor is nice and hot it won't start without getting o Dec 4, 2007 ยท I need to know how to adjust the idle on a 1999 Yamaha Big Bear 400. turn it back on. make sure the pison is on top dead centre (look through the small timing plug hole down the bottom) There is a punch mark on each cam sprocket that aligns with the cylnder head surface. Can't get to WOT, won't make it past just off idle unless the choke is on. If you give it gas or push in choke it dies ,float seems to be adjusted correctly. Bogs at Middle Throttle; 5. Yamaha big bear 1997, lift kit 3", rear wheel spacers 2. Additionally, a malfunctioning carburetor might cause the automobile to operate Dec 31, 2018 ยท Posted on Jan 05, 2019. Sep 6, 2014 ยท 1. Jan 9, 2013 ยท There should be an adjustment screw on the right crankcase cover. it will not start now without hitting the gas. Test for spark by grounding the threads of the plug against the cylinder. It was idling too high. If it stumbles, the idle is ok, but sometimes it hiccups again and dies. ive been told it could be due to high compression. Replaced all o-rings and reassembled. Compression was low at 105psi, leading me to replace the piston and rings. The original 17. I recently acquired a Yamaha Big Bear 400 don't know anything about its ownership history wear and tear my first four wheeler ever. Sep 24, 2016 ยท My big Bear sputters at half throttle only. when starting, especially cold, electronically it drags on the first stroke. Have an 01 ultramatric. On the left side of the vehicle, looking in at the carburetor, notice a screw pointing straight down near the bottom of the carb, slightly forward. Also you will want to try to get all your adjustments done on a hot engine. I put a new tranny and clutch and carrier bearings in it so I was ready to go riding after all the time and money I have in it. Oct 20, 2014 ยท A low battery can kill spark. A healthy spark plug should have a light brown, milk chocolate-like color. It will either immediately die or stumble. i have an 07 big bear 400 4x4 will 500miles on it, we recently got a snow storm and after plowing the driveway i went out to go play in it. #1 ยท Nov 30, 2008. Jul 13, 2010 ยท My buddy has a big bear 400 that is spitting back through the carb at idle and just above idle. Owner just rode it 2 times and sat in storage for 4 years. thanks! Nov 4, 2020 ยท Big bear400 cant get to shift to natural. 4KM-14142-20-00. comYamaha big bear 400 wont idle. Dec 6, 2022 ยท How do you set the idle on a 2003 Yamaha Big Bear 400? To set the idle, adjust the carburetor. If the machine doesnโ€™t start up right away, your starting problem could be a bad brake light relay. Stalls when at Idle. May 18, 2015 ยท 7. The choke isn't stuck, all passages have been thoroughly cleaned and the diaphragm is working correctly. It also does it sometimes when I let off the throttle. Apr 21, 2023 ยท Yamaha big bear 400 wont idle. When I got my four wheeler the throttle cable was stuck wide open and the choke cables broke off so I just went ahead and replace the cables and the carburetor. 12/22/2019. Submitter. Hitting the throttle from idle, it will sometimes cough back through the carbwhich is another indication of fuel starvation. Well after about 15 min after running through that mud hole, they were goofing around riding a little fast over some ruff terrain, then all of a sudden it started stalling out around 1/4 throttle, my first thought was some water somewhere where it should not have been tore a few things apart and put some di-electric Feb 21, 2018 ยท 2016 Kodiak non EPS. I need to know what the factory base setting for the air screw is. A higher than normal idle does not mean that you Apr 24, 2011 ยท 54. Dec 23, 2019 ยท Posted December 23, 2019. So I bought a new plug and that seemed to work until recently. 3. Then close bleeder top off fluid and replace cap. It will crank with the choke on and has a very inconsistent Mar 19, 2016 ยท I have removed the carb again and cleaned the needle valve out and the whole of the carb just in case there where any dirt behind it. Aug 2, 2020 ยท You must first press and hold the foot brake before being able to shift into reverse. Aug 18, 2019 ยท Posted August 18, 2019. Not uncommon for older carbed bikes/quads. The main jet controls 3/4-full throttle only. It will start back up after a few pulls ( battery is shot, waiting for a new one to come it) but then Sep 24, 2010 ยท Definitely DO NOT run this engine in its present condition. #1 ยท Sep 20, 2019. It will start on half choke, run on half choke but when SOURCE: no front brakes on 95 yamaha big bear atv. Turn the ignition on your machine, push the brake, and then hit the start button. If I hold the throttle open about 1/8-1/4 inch it runs great. Scott Sirr. when i got home and garaged it for the evening i woke up to a hard start and rough idle Nov 11, 2013 ยท SOURCE: no front brakes on 95 yamaha big bear atv. #1 ยท Dec 11, 2015. 01 big bear 400 cranking issues. Some attempts it fires up for a second and then dies while other attepts it just cranks. It starts and idles like it is brand new. I noticed the The Big Bear was not right during a snow day this year. I have an 01, and it started doing this. I am getting tired of it just sitting Sep 6, 2010 ยท senior motorcycle technician. Prior to my purchase the previous owner, a friend, said he cleaned the carbs. I put it in neutral, green neutral light is lit, but it wont crank. . The bike hasn't been running to my knowledge for 4-5 months. I bought a 2001 bear tracker 250 for my family to get around the dirt bikes races. Assuming no spark, then check all the kill switches with an Ohmmeter to be sure each switch is working properly. when I dropped the carb bowl. My Yamaha Blaster wont idle? under the seat where the throdle screws in the carb, there is an Mar 16, 2010 ยท This winter gremlins have entered my garage both my drz and big bear are having jetting issues. Sometimes it will die when idling. Engine now runs fine again but fuel has started to run out the carb overflow again. Choke on and it would rev with the throttle. make sure fluid is always full. Yamaha sat for two years cleaned carb and gas tank idles fine but when it warms up it back fires thru carb what might be worng it is a atv big bear 350 1987 500 miles Check valve adjustment. First, Make sure that you have a correct air filter in the machine. I know its in neutral because it will roll. EBU13052 Brake pedal and rear brake lever 2. QUADCRAZY Classifieds. How to Adjust Idle Yamaha Grizzly 350 400 450 ATVs. Loosen bleeder, squeeze brake lever slowly until pulled all the way in. Tried cleaning carb & air filter, drained bowl & cleaned with carb cleaner. Sep 27, 2013 ยท Posted September 27, 2013. 7 wont idle showing code 12 What would cause a 2003 Pontiac sunfire to die when it comes to a stop The idle goes all the way to zero and dies. I check valve clearance, timing, spark, fuel flow to carb. If you are pressing the foot brake, then the cable could be broken or stretched. The pilot jet should be #45, the main jet should be #140. I recently got it out and tried to get it running. 911manual. It runs great but the carb seems to be needed some kind of adjustment. Remove the spark plugs and have a good look at them. Dec 4, 2007 #2 Dec 11, 2015 ยท 2 posts ยท Joined 2015. Runs great at higher RPM no cut out or missing. I'm working on a 400 big bear and I can't seem to get it to idle right. there is an assignable cause for the backfiring and the exhaust getting red hot . Yamaha Grizzly 700 Starting Problems Troubleshooting Test #5. 1) Check for water in the gas. Recently my grizz has been popping/backfiring back through the carb at low rpms. Posted May 18, 2015. Oct 21, 2009 ยท Few days ago I purchased a 2005 Yamaha Kodiak 450. Jul 12, 2014 ยท Posted July 12, 2014 (edited) Hi, I have a Big Bear 400 that Im working on for a friend. 5", tires itp Nov 10, 2018 ยท 5712 posts ยท Joined 2013. Sounds like the carb could use a cleaning and setting by a professionalinstall a new plug and a new air filter. 79โ€“ Brake pedal free play adjustment 1. Mar 17, 2012 ยท Posted March 17, 2012. My neutral light has stopped coming on and the bike will not start. On the same account if I try and let it idle it seems to idle so low it just dies. If you are pushing the start button and it cranks intermittently, you may have a bad switch or a bad solenoid. Mar 28, 2010 ยท Starts and idles good but then backfires and sputters when given throttle. YFM40FBW. I need to figure out how to clean/fix or replace my neutral switch assembly On my 2008 Yamaha big bear 400 as generally the neutral light doesnโ€™t come on when it is in neutral. Try the pilot jet first. The motor will bog out with too much air if no filter restriction. Could there be aproblem with the choke. Big Bear 400 idle and acceleration prob. ) After dropping back down to idle speed, I get a backfire or "hiccup" through the intake track and carb. Nov 6, 2015 ยท The problem is it is running so badly it won't stay running at an idle. 2. No signs of use, everything is clean. #1 ยท Oct 8, 2011 (Edited by Moderator) I've been fighting carb issues, had a stuck needle, and was leaking fuel as fast as it went in, got that fixed, and now it will start fine, idle ok but as soon as I try to give it any gas, it dies. Sep 15, 2014 ยท Kodiak Wont Run At Full Throttle. It was running just fine before i hooked the snorkel up on it any ideas as to why this Screw the Idler Adjuster all the way in and and back up two full turns and a half, then adjust the accelerator cable until the Idle gets to the lowest point. I checkedn the boots for cracks and air leakage but found the prob. pg zn ml bw sg hi yd xy ek pj