Today I worked on a new G0490 jointer that belongs to a friend. He got it a Christmas time and it did not have much use since then. It was making a loud bang when it started. It turns out that both set screws and the key from the motor pulley had fallen out and the large Allen head screw on the cutter head shaft was not even finger tight. This is a lot concerning to me as not everyone will think to stop, take the covers off and check at the first sign of noise from this area.
I think we caught it before any major damage was done.

CPeter