JB weld, when used in between mating parts to remove slop, will do surprisingly well. Because it is "confined" between the parts, the majority of the loading is compression. Used in an in-frame crankshaft repair on a VW diesel. Poor design reworked to updated design, JB weld used to take up micro slop. Lasted, AFAIK, 60,000 miles at least.
Question for anyone familiar with a 782 and or a qa42a: The teeth on the large gear have been broken in places. I've been the owner of this snowthrower for 4 seasons or so and this is the first I've taken it apart. At first I was thinking oh that's old wear from the PO. But perhaps it's also from my use. Ouch! Perhaps because the outer bearing on the one shaft was missing for who knows how log, that it also contributed to some unwanted movement?
One thing that worries me always with the combination of the 782 and qa42a is turning on the PTO . . . On the 782, there is no way to ease into the PTO. It's either full on or off, and that PTO switch seems to slam the snow thrower into motion even when the engine is at idle. The shearing spring pin on the shaft with the auger sprocket and chain has sheared quite a few times just by turning this thing on. That slamming into motion could definitely be contributing to some broken teeth! I'm curious if anyone has some insight into how to turn this on gingerly?