I found a line so liar to a fish tank airline the other day after riding. I did get stuck in very deep mud but don't know if they're connected. It's towards the back of the atv. I'm not very familiar with engines so any help would be greatly appreciated

 

First place I would look would be the battery. See if it still has the vent tube connected to it.

 

Okay how would I check and fix that if that is the problem?

 

Did it fall off the machine? or did u just notice it was there and don't no what it is? is it a clear line or a rubber line?