I bought the HRU216 about 2 weeks ago very used and broken. After virtually rebuilding it I have used it for 2 days with my business ( testing the repairs before the busy season). It runs great and cuts well, although I haven't used it on thick grass yet I think it will handle it well. I only have 3 minor issues which probably won't affect most users. The handle is quite a bit lower than I like (I'm 6'2") some adjustment would be nice. It is slower than a hrx217 I'm use to an almost jogging pace. The speed can't be changed while moving, if I approach a thick patch of grass I have to stop to change gear. Like I said these are minor and it will be a good 2nd mower for my business.

Have been using a HRU216M1 for three years, as a professional, and it is still going strong. Just bought my second machine (the K2). Only repairs have been with areas where you would expect wear & tear, like the drive shaft to the gear box. Clogging of shute only occurs where grass is extremely thick and wet, and would be expected.
Works for me.
Nothing.