Sparks and burning smell from planer

I have an older Central Machinery 10” thickness planer that I’ve been tuning up and planning to work on a snip issues. I was noticing it did not sound right and today when feeding in some pine it just stalled. I turn the unit off and could see smoke from near the bushings. I”ve been thinking of replacing the bushings because of the sparks I can see from that area. Is it hosed? Any help is greatly appreciated. Also I don’t have any idea on how to tell if the bushings are a problem. Thank you.

-- Russ