I had to remove mine, it comes out that square opening that the cover mounts to, you will see two or four bolts on the side top and bottom. That loosens the hole thing and it just about comes out. I think if its level it has a quarter inch clearance. When its about half way you can get to the water lines. Make sure you remove the gas line and keep it out of the way. The electric igniter also needs to be cared for.