Digger,
Do you have any more photos of the Sweepster on the QL? I have a Sweepster that looks more like the one in Roland's brochure [with the plastic brush cover and plastic chain guard] for my 1250. Mine is in rough shape and needs a couple of things to be useful.
There is no lift mechanism. I thought it used the tractor's lift to raise and lower the brush but after reading the description in Roland's brochure perhaps it is completely a function of the Sweepster unit.
Also, I haven't found the optimum set up with the way the gearbox is suspended under the attachment bracket. I've tried many different combinations of holes but when the drive pulley lines up with the PTO, the Sweepster driveshaft seems too short. I haven't figured out if I don't have the proper parts or if I just haven't found the magic combination.
Thanks for your help guys, Mike