I finally got my Q42-A modified and mounted on my 782, got the pulleys properly aligned, etc. Unfortunately, I wasn't able to even give it a little test run on the 4-5" of snow we got, for several reasons.
1) The thrower only lifts off the ground about 1/2". I bought the lift rod off an unnamed online auction site, where it was advertised as being for this unit, but... Guess I'll just have to make one the right length. How high should the unit lift off the ground? At the current rate I sure wouldn't have needed to put the "curved arms" on it!
2) I put a new belt on and adjusted/tightened it as far as the adjuster/tightener allowed, but it's still extremely loose. (So loose that it didn't even squeal when the auger stopped turning in 2" of snow!). I repowered the tractor last year with a non-Kohler, making sure the new motor was adjusted properly front-to-rear for the clutch pulley alignment. I also used spacers under the motor to keep the driveshaft properly aligned, but that's the only thing I can think of that would prevent tightening of the belt. Thoughts?
3) No chains or weights on the rear end. On one hand it's a nice change of pace, being too light in the rear end, but... (I really thought my oversized caboose would do the trick!)
The good news is that my neighbor came over and blew out my driveway before I even got out of bed this morning!