The way I have seen our moving guys move large appliances like washers, stoves etc...up and down stairs is with a blanket type thing. This looks like a blanket but has handles on 2 sides to help hold the blanket. They tip the machine to allow the blanket to slide under it and then have 2 people, one on opposite sides from each other holding the blanket and then slide it up or down the stairs. When you get it where you want it, you slide the blanket out from under it. JUst a thought! Also - make sure you have drained all the water from it - that adds lots of weight as well. Good luck