WTF happened

[Zwiser]

strap the bumper down to a sturdy point like a truck hitch

 

[toytech]

worn chain and mud can cause that. time for new chain and sprockets.

also check you axle bearings and swingarm bearings

 

[theblasterboy]

well i dont see a skid plate on that swinger so you may have hit a rock, stump, small child, whatever and bent that sprocket

lol at the small child

 

[slickerthanyou]

i did notice that my whole sprocket was lose. like i just kick the chain when im on the trail just to check it quickly and my back sprocket moved when i did it. like not just the sprocket but the whole thing on the axle. so i wondering if my spines are good

This is more than likely your problem! That should be tight! the sprocket is wobbling, sounds like you need to tighten your nutz!! I:I

 

[toytech]

well i dont see a skid plate on that swinger so you may have hit a rock, stump, small child, whatever and bent that sprocket

with a hard head

 

[Awk08]

i'm bettin bad axle bearings too

 

[alex90]

that happened to me once when my nutz loosened ...take in ur tensioners all the way, and loosen your lower carrier bolt..by then you will see that your carrier will have lots of forward and back wards play and you will be able to reset the chain... i recommend you get new sprockets and chain and an axle lock nut or lots of tape...an atv jack makes this real easy!

 

[98blaster+4]

and make sure when you set the tension on the chain you are either sitting on it or somebody thats the same size as you is sitting on it. then the tension will not be too tight once your on the qaud.
it is possible to overtighten the chain when there isnt any wieght on it, but then the first big bump that comes close to bottoming out will have the chain way too tight causing it to stretch or jump off, or look like yours does