John Deere Hydro 185 Drive Belt Size
If you are replacing the drive belt on your 165 Hydro, you should go with the same size as your 185 Hydro. The only difference is the length of the belt. The 165 and 205 Hydro both have a 60-inch drivebelt, so a 63-inch belt is recommended for the 38-inch mower. The 185 is similar to its predecessors in most ways, but it has some more features.