switch or is there a button or some thing to change tanks from standard and reserve, where would it be located if there is thank you for your help
can any1 help me

u should have a 26 gollon tank..but to be sure take a 2 gallon gas can with u when u go out, do not fill it up before u go.run it dry..then add the 2 gallons u brought with you.
then head back to dock , load her up & go to pump.and fill her up.
there is not a reserve switch, although u can install ur own.

P.S. take a can of starting fluid with u when u go out to run the tank dry.. this will help u prime it in case its hard to start after running empty.