If its anything like my JD7775 which I believe it is.........there are two areas to check oil. One would be between the drive wheels of the machine on the outside. You will see a plug with 1/2" drive recessed hole. Loosen the plug with a ratchet and remove. Stick your finger in the hole and you should be able to touch oil. If not, add oil through this hole until it comes out. This is your "final drive" and uses 10w-30. There is one plug on each side of machine. Next, lift the seat and look at the outer walls of the frame. On each side there should be a gear box with the same type 1/2" drive plug. These gear boxes take 80 or 90 weight. No dipsticks that I know of other than engine oil and everything I said may be different if your machine is a two speed.