pics of kerosine pumps below. I taped mine up and put silicon around the battery compartments to make them not leak water. You used to be able to get them at this emergency supply store in Mountain View on El Camino, but I heard they are no longer there. I bet if you look around online or call around to some emergency supply or army surplus type stores you can find some. I've been using the same two pumps for like 5 years now, they seem to last really well.

http://www.bass-n-tubes.com/albums/rigging/livewell.jpg

http://www.bass-n-tubes.com/albums/rigging/pump_brand.sized.jpg