Posted 8/14/2015 20:49 (#4733646 - in reply to #4733536) Subject: RE: NH 489 Haybine, When are the rubber rolls wore out?
My experience with a 499 is the popping and issues were related to the rolls getting out of time. Move them slow and see if the leading edge on on is contacting the other. Should not.
There should be an adjustment or the knuckles/drive shaft might have lots of slop.