You're right of course... My complaint is that the weld was bad from the factory and no one ever taxed it to the point that it showed.
I suppose if they had, the unit would be brake rotors now instead of in my garage.
Those 20 horses were used for mowing and snowblowing and not much for pushing or pulling.
Kinda Shows the intermediate step between the bullet proof stuff from the 70's and the drop the quality for quantity mentality of later decades.
Disagree whole heartily! Spent 1000's of hours hood down behind the dark glass watching the bright light. If your referencing (all I can see to your point) the original weld with the crack thru it, that looks to me like a SOLID wire fed (mig weld) it didn't split like that at its inception, sure looks to me like years of torque caused metal fatigue.The fact the the weld split and did not break where the two pieces were joined tells me the penetration of the weld was fine. Perhaps a bad run of wire in the welders machine, shielding gas issues, hard to say , but IMO that was a good clean factory weld. Design issue or again maybe, bad consumable, don't take this wrong but if that weld broke, I have concerns for yours.