Just received my new planer, a Grizzly 20" G1033X. Well I had a Dewalt before this & never adjusted anything, just popped in the blades & away we go. Now I have to check the height of the infeed roller, outfeed roller, bed rollers, chip breaker, pressure bar!! I'm glad to have it, but it's a bit daunting at 1st. So while reading the manual they say all these were set at the factory but to check them. Haven't yet but I will as I hear a bit of chattering. Grizzly says the infeed,outfeed roller, chip breaker & pressure bar should all be 0.040" below the DBC of the blade arc. I happened to Google the set up & found a great video stream. I found this very helpful, a guy called Bob Vaughan, it looks old, but still very informative. He claims the pressure bar should be -0.003 & the others should be about 0.32.
Thx, Chris