I bought a Bolens 1800 Hydro Eliminator with an 18hp Kohler. Would the 1900 and 1800 be the same as for the mower decks and some other things. Cant seem to find an Owners Manual and parts Manual for an 1800. But was looking at the 1900 and it seems the same as the 1800. I am New to the Bolens tractors and am learning. And right now just need to fix my deck or get another one, Trying to find out how big of deck I can fit on it.