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  1. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    I have a 2004 big bear that I recently got running a driving after sitting for about 5 years. I got new parts for what needed to be replaced but I have a question about the front brakes. The lever has zero resistance in or out. The reservoir is bone dry with a brownish paste at the bottom...
  2. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    I decided to remove and clean my oil cooler after a different incident resulted in gas getting into my oil. Of course the person that installed the cooler tightened the fittings to a million pounds and I snapped them off the cooler trying to lossen them. So the cooler is toast. I wasn't about to...
  3. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    Hi, I have a 2000 Yamaha big bear 400 that I replaced the head gasket on but after trying to put the camshaft Sprocket and timing chain back on I can’t figure out how to get the chain and sprocket on in the head. Can anyone help me out
  4. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    Hello, my name is Marcos from New Mexico. Im new to this forum and happy to be here. I own a 2007 Grizzly and recently purchased a 2001 Big Bear 4x4 400. I understand the Big Bear is more of a work bike and has a top speed of around 40-45mph. my Big Bear needed a few minor things worked on such...
  5. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    Having issues with my 2003 big bear 400 and was wondering if anyone might be able to help trouble shoot it with me. Seems to be an air issue from my tests but I'm no expert. It runs perfect when I don't have the airbox lid on, but I'm not trying to permanently ride like that. If I have the...
  6. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    Hello I recently purchased a 2001 big bear 400. I’ma little odd and like to read the owners manuals of my machines. However I can’t find one for this machine. Does anyone have one they can upload? Thank you.
  7. Yamaha Big Bear/Bruin/Wolverine ATV Discussion
    I recently acquired a Yamaha Big Bear 400 don't know anything about its ownership history wear and tear my first four wheeler ever. 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. I...
  8. Parts For Sale
    Recently snapped the front right lower control arm on my Big Bear.. the Yamaha dealer I went to said that Yamaha discontinued the part, and that not a single dealer in the country had the part left. eBay was no use, as all they had were the bushing kits and upper arms. Hoping somebody out there...
1-8 of 8 Results