i neverrun it out was told by a evinrude dealer long ago . that you never run it all out and the little left will drie up quicker . just pump it full every nown anthen . i don`t let mine stand that long . i fish in the winter to . when you run it till it quits the top carb runs out first and while it is running the bottom out the top is running dry . think that is why the top piston gaulds befor the bottom .