1999 Yamaha Big Bear 350 4x4 Won't Shift - Yamaha Forums
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post #1 of 4 Old 09-13-2020, 12:24 PM Thread Starter
 
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1999 Yamaha Big Bear 350 4x4 Won't Shift

I recently bought a 1999 Yamaha Big Bear 350 4x4. The previous owner put a new carb on it. It was a crappy Chinese carb that didn't work well, and as a result, the bike would barely run or not run at all depending on the day. At first, I wasn't sure the "new" carb was the issue, so during the process of troubleshooting, I took the engine cover off to check the flywheel/other components for damage/rust. I took the stator off to get tested. After putting everything back together, I finally wised up and sprung for an OEM carb and had it rebuilt. After putting the OEM carb on, the bike runs great, but now it won't shift, and while it's running, there's a sort of grinding noise that sounds like its right behind the engine cover where the pull-start/stator/flywheel on. It's not a terrible grinding noise, but it definitely wasn't there before I took the stator off. Any thoughts as to what it might be?
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post #2 of 4 Old 09-13-2020, 10:11 PM
 
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Originally Posted by wquin View Post
I recently bought a 1999 Yamaha Big Bear 350 4x4. The previous owner put a new carb on it. It was a crappy Chinese carb that didn't work well, and as a result, the bike would barely run or not run at all depending on the day. At first, I wasn't sure the "new" carb was the issue, so during the process of troubleshooting, I took the engine cover off to check the flywheel/other components for damage/rust. I took the stator off to get tested. After putting everything back together, I finally wised up and sprung for an OEM carb and had it rebuilt. After putting the OEM carb on, the bike runs great, but now it won't shift, and while it's running, there's a sort of grinding noise that sounds like its right behind the engine cover where the pull-start/stator/flywheel on. It's not a terrible grinding noise, but it definitely wasn't there before I took the stator off. Any thoughts as to what it might be?
I'm guessing you put it back together wrong...
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post #3 of 4 Old 09-14-2020, 11:34 AM Thread Starter
 
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I'm guessing you put it back together wrong...
Very funny. I know that's probably what happened, but there wasn't a whole lot to take apart and put back together, so I was asking what I might have messed up to cause the issue.
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post #4 of 4 Old 09-14-2020, 01:32 PM
 
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Very funny. I know that's probably what happened, but there wasn't a whole lot to take apart and put back together, so I was asking what I might have messed up to cause the issue.
Not trying to be funny. Have you pulled it back apart to see whats up? I bet when you do you will find the problem being that there isn't much to it.

Maybe this will help, the pictures suck but it's all I could find.

http://www.maultechatv.com/techguide...0Bear%20SE.pdf

Quadcrazy is a good forum, they probably have a better manual posted, you need to make an account to download it though. Also, they seem to be more active than this forum.
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