Nuru - what you want is an adapter that permit you to connect a garden hose to your valve stem. The adapter that I got at my local NAPA store was made for the larger air/liquid valve used on big tractors, but had a fitting that screws into the the adapter that reduced the adapter to standard valve stems size. If you are thinking of filling your tires, it fairly easy, jack the tractor up, place the valve stem at 12 o'clock, reduce air pressure (don't let it all out, I have heard that the weight will unseat the bead), start filling, stopping to bleed the air out occassionaly. I used a small drill operated pump to put the antifreeze in (I used methanol, 1 gallon to 6 gallons of water). Remember to following your tractor's manual as to how full you can fill them, usually just over the top of the rim. I found out that the extra weight made my JD790 more efficient at loader operations.