Bought a Sunstar 18 a few weeks ago. It needs some TLC and I have been working on it. The hour meter has 2316 hours on it and the M18S is still running strong with no noticeable oil consumption or power loss (not sure if it is the original engine or not, tag isn't legible). The hydrostatic control linkage is worn out and the replacement has arrived, so that will be installed soon. The 48" mower deck was rusted through in several places and I stripped the deck down to the shell and transferred all the parts to the 48" donor deck I bought that came off of a 7116. There were two pulleys that I had to move to get it all to work and a bunch of holes that needed to be drilled, but I expected this much. I've already mowed about an acre of grass with it and I am satisfied with its performance.
When time allows, I'll clean her up and pound some of the dents out of it and make a rear lift to so it can earn its keep around here!