Seized chain guard bolt

[Jamieg285]

Try a  screw extractor set.


Drill a hole down the centre of the bolt (smaller than the thread), then insert the screw extractor. It's reverse threaded so as you turn it to undo the bolt, the extractor tightens it's grip on the bolt.


I find the hardest part is getting the extractor to grip the bolt at the start (that's possibly due to a cheap tool), but once it's gripped it works really well.