I don't know anything about the 400EX but... is that a broken or cut choke cable? Hopefully someone who is more knowledgeable will find this and offer a bit more help.
You can get a copy of the service manual HERE to use as a guide for repairing and maintaining your bike.
Welcome to the forums!
You can get a copy of the service manual HERE to use as a guide for repairing and maintaining your bike.
Welcome to the forums!