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Read articles →Filmed underneath a raised eight-foot brush hog with a repair technician (Chris), this video zeroes in on one specific problem: excessive vibration. It explains why blades overlap and cause imbalance, what a stump jumper does and when you need one, how a leaking gearbox kills bearings and causes wobble, and why bad PTO U-joints transmit shake back to the tractor. Practical used-brush-hog buying advice closes it out. Best for owners troubleshooting a shaking cutter.
Tractor Mike is a longtime tractor-industry insider with decades of hands-on experience in the equipment business. He built his channel to help first-time and rural buyers make confident decisions, and his guidance comes from that deep, long-term background rather than a sales pitch.
Causes include blades overlapping and getting stuck after hitting something, a leaking gearbox that burns up bearings, and a bad U-joint with excessive play in the PTO or drive shaft.
It is shaped like a bowl turned on its side so if you hit a stump it skates over the top instead of stopping the tractor and throwing you out.
If you are in timber where you might hit a stump, you probably need one. In a clear pasture with no stumps, it is less critical.
Get underneath and try to move the stump jumper or blade pan up and down. Any wobble indicates bad gearbox splines, a major and expensive fix.
