Hi october and welcome to JA
It could be water as you suspect or when the tank went low it is possible that it picked up something that has your feed line partially obstructed. Try removing the feed line at the engine and see if you can blow back into the tank to check for obstruction.
One of the other experts here just reminded me there is a check valve at the tank on your bobcat so you won't be able to blow backward. If you can then there is debris in the check valve that could be causing your problem. Remove this check valve and check for an obstruction. Being at home on a sunday I miss the wall of manuals behind my desk at work. The memory is not as good as it once was. Sorry for any confusion.
I can see the fittings on top of the tank with the hoses coming into them. Is it one of those hoses that is broken or is it a hose inside the tank? Do I undo the hose on top of the tank? Does the fitting unscrew or how does it come out?