predator / laski 360 belt adjustment

[Dilz]

Just had a check over my laski / predator 360

noticed the belts had been slipping last usage so checked the tension and they were a bit slack - nothing major -thought id adjust it and then noticed the 2 adjustment rods at the back have sheared. - its the first time I've gone anywhere near them personally.  Just wondering if anyone else has had this happen or can think why it has. 

[Dan Maynard]

Look a bit like the engine has moved forward a mm or two? If the engine bolts slip a bit then with the vibration they have been under stress cycling so failed through fatigue. The end of weld and sharp corners at the thread make this a great spot for a crack to start.

 

I guess one answer would be tension the belt, tighten down the engine, then unload the studs.