Vintage Dirt Bike Q & A

The bolt broke off leaving the knuckle attatched to the crank. Any advice on getting the knuckle off the bike.? The bolt broke inside the knuckle.

If I understand this correctly, the kickstarter still works but the bolt that
secures the knuckle to the spindle has broken off inside the knuckle, correct?

I would remove the kickstart lever from the knuckle (give you better access).
If the bolt is broken off flush with the surface of the knuckle, use a rotary tool
with a cut off disk to slot the bolt making it into a screw you can remove with
a screw driver. Before you attempt to unscrew it though, spray some penetrant
and let it soak for several hours.

If the bolt is broken off below the surface of the knuckle, I would recommend
using a screw extractor that you can get from your local hardware store and
use according to the manufacturer's instructions.

If the bolt broke off while tightening, it will be easier to remove than if it broke
off while loosening.

Good luck.

dogger

_________________
1973 CR250M
1979 CR250R
1993 CR250R
2008 CR500R
2009 CR250R

Thanks dog.