Join Today, It's Simple and FREE!
As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery. Registration is fast and you can even login with social network accounts to sync your profiles and content.
I picked up a 1997 Yamaha Big Bear 350 2X4 a week or so back in non running condition, apparently they said it needed a new carburetor or a battery, I cleaned the carburetor thoroughly and got it running on idle and without choke now and it shifts into all the gears even into reverse. Aside from making me bounce a little when trying to start out with a bit of throttle the shock suffice to say needs work. Anyways I made a video of it running and would like your opinions on it, as to how it sounds while running. It seems like it has a little whine I'm not sure why that is maybe someone can tell me what it is. Anyways here is the video.
I have a 2004 Yamaha Bear Tracker in the shop for repair. I have the service manual but it doesn't have all the information I need to fix the problem. I need to know the voltage output of the stator charge coil and pulse or trigger coil at cranking speed. The wiring diagram color code doesn't seem to match and that is compounded by the fact that the wiring harness CDI connector is missing so I have 7 wires that need to be connected to the CDI. I can not find a circuit diagram of the CDI which tells me where the pulse/trigger coil connects or the charge coil connects. The other 3 wires (black ground, orange ignition coil, and r/b ignition kill sw) also need to be connected. The CDI has a single 8 pin connector and has a P/N 4XE-00 F8T19871 -1122 number on it and I believe it to be OEM. However I think the Stator and pulse coil are aftermarket items. I have resistance tested everything and it all seems to be in spec. but I don't want to miss wire anything and cause damage. Any help would be greatly appreciated.
By Mike Johnson
Does anyone know what the 3rd item is behind the battery on this ATV ? I know 1 is the, solenoid1 is the CDI box, what is the 3rd.
By Scott Sirr
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 doesn’t come on when it is in neutral. To get it to come on I have to wiggle the foot shifter and hold it in just the right spot.
I have googled it and can’t find much on the 400’s. I can’t find a service manual online and the parts manual is super vague.
I think it is in the right side engine cover area, but not certain.
Any help would be great. thanks
Similar Tagged Content
By Reece K.
I just recently bought a 1994 Yamaha Timberwolf 4x4 from a buddy who had the wheeler sitting in his garage for 7 years. I got it home and fired it up pushed it out of the garage and tried to shift it and it wouldn't shift. First it would click like it was shifting, but the wheeler wouldn't move and when I hit the gas it revved up like I was in nuetral. After trying some more it became stuck in 1st gear and wouldnt shift at all. But it later broke loose agian and acts like it is in neutral again. I took the motor off the machine to make it easier to work on.After asking friends they were convinced it was a clutch problem but after opening up the casing for the clutch I don't see anything out of the ordinary and am concerned that it may be a transmission problem. Any help would be greatly appreciated thank you.
A week ago I could not even get close to starting it. But now I adjusted the valves (exhaust valve was not closed). i got it running but would not run without choke. i adjusted the float because it was to low tried starting it up again and it would not even start. So i went back and looked at the valves and the valve was now open again so i adjusted it and it started right up and ran perfect without choke. So i put it all back together thinking it was ready to go. Started it up and let it run for a little bit. i turned it off and tried starting it again there was NOTHING. took it apart and there was 0 compression and the exhaust valve was open again. I am completely lost need help PLEASE!!!:aargh:
Ok, so got this thing, assembled, and even added acid/assembled the battery with a solid trickle charge and the battery is fine.
As far as I can tell, I have checked all the fuses I can find, but I have ZERO power to anything. Even the console will not light up when turned to ON.
Is there some sort of hidden parental/child disconnect or safety switch that I'm not aware of? ANY help would be appreciated.
I have a 94 sportsman 400. It sat for several years before i got it. I have cleaned the carb it will start and run for about 5 min then it will flood. I have torn it down and cant see anything wrong. has anyone else ran into this problem any hel would be great.
Looking forward to posting some questions on here, doing some reading on here, and enjoying the company of others.
So I bought a 1994 Yamaha Big Bear 350 4x4 from a buddy of mine for $1,000. He has had the ATV for about 2 year. No rear problems when talking about the motor. It has failed to start some, and unfortunately it does not have a pull string. Not sure if that is something I can add on later or not. But we traced the issues to the starter and replaced it. Now it starts easily and has a new battery and starter that he bought .
Issues I am going to be working on, and asking questions about:
Hours display is broken and doesn't show anything at all
Would like to possibly add a speedometer at some point
Rear brake doesn't work until the pedal is all the way down to the floor, and then it engages, doesn't really brake. I'm thinking this is a simple adjustment
ATV pops and clicks when turning. Was thinking CV axles, but not sure and want to be 100% sure before I order replacement parts
Need to learn the braking system better. It has two hand brakes and then the pedal brake. What's the difference and how do they all work together. Assume one is a hybrid brake that engages both front and rear at the same time, but not sure
Need to clean/paint the hubs
The shifting is tough and some times requires more pressure than I'm comfortable with. Not sure if it's lubrication, or an issue with the linkage. Need to learn that too.
Having a hard time finding a manual online, need to buy one probably
I have around $500 to invest into the ATV. I am hoping this will take it back to really nice riding condition.
Any thoughts on the above issues/concerns? I plan on using the search functions as well.
Looking forward to hearing from you all.
Recently Browsing 0 members
No registered users viewing this page.