I am fortunate enough to inherit a great woodworking shop from my grandfather even though many of the machines are outdated and lacking many conveniences of modern tools (like dust collection ports). My grandfather has always been a miser and went with heavy duty machines that were off brands - one of those being a Chang Iron 20" planer. Boards are extremely difficult to send through the machine. I have to push with all my might to get them through. I thought it may have been dull knives, but I just had the knives sharpened and reset, and the boards are still extremely difficult to feed into the machine. Even when only barely contacting the wood (maybe taking off 1/64") the roller burns up the wood whenever I stop pushing for a split second.
I've looked at adjusting the roller tension by what looks to be like a bolt, but am apprehensive to screw something up. Anyone know anything about these machines? It's got to weigh 1,000 lbs.