I purchased an Exmark Metro 48" on Friday. Had it delivered on Saturday and mowed my 2/3 of an acre in 35 minutes as opposed to 2 hrs. 15 mins. with my old 19" push mower. Obviously, I am extremely pleased with the time reduction and the quality and consistency of cut is awesome. Question. The cutting height adjustment has 4 spacers that can be changed to adjust height. The mower was delivered with the setting in the middle position. Does anyone know what approximate cutting height that corresponds to? Is there a guide that gives heights for each setting? If it's in the owners manual, please forgive me. I won't get a chance to look there until tonight.