I have a KFX 400 and the four bolts on the swing arm you have to take loose to adjust the chain are rounded off. Any ideas on how to get them out.

 

Hears what you do... Take a dremel tool and grind slits in them so that you can fit a big flathead screw driver in it, and then put a pipe wrench on the screwdriver handle and they will break free right away///// also replace them after with allens....

 

if you dont have a dremel you can also look into what is called "bolt out". they sell it at sears and its a shape of a socket with teeth on thed inside, you get a specific size for wht ever size bolt you have stuck, then you take a light hammer and tap it onto the bolt, then once its stuck on pretty good you put you ratchet on and twist. its not hard at all, i have used them on my cars, truck and quads. once out put in a allen bolt. make sure if you buy it you buy the right size.

 

I did what fidge1 said exactly.Except it was on the carb screws.Also did it on the Rappy's wheel nuts but had to totaly cut them off.We tryed the socket with the teeth but it didnt work.Dremel all the way.[img]i/expressions/face-icon-small-wink.gif[/img]

 

if its a U.S. bolt, sometimes you can use a metric socket, since it is a little bit different measurement

 

the dremel works auwsome. i did it on a threaded portion stuck in a frame! came out so easy

 

Ok I like your ideas but what i didnt mention was the bolts are in there super tight. Should I still try the dremel and screw driver?

 

Do you have a impact hammer? You can cut a slot for a standard type screwdriver and then use the impact driver to remove the screw.
The impact of hitting it with a hammer and turning it at the same time should do the trick.

 

The swingarm chain tightening bolts have nutts on the bottom but the nutts are tac welded to the swingarm.
I think cut a slit with the dremel in the top bolt without damaging the actual bolt threads and use a screw driver like you mentioned and a hammer and give it a wack.

 

you could weld a socket on??