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 | mascari
Join Date: Jul 2004 Posts: 2 Medina, OH 
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2004-07-08 90372
OK this may be a dumb question.
I'm using my Dad's old Ford Jubilee Tractor to clear part of my property. There is a Howse bush-hog attached. I ran into a couple of hidden stumps that made a lot of noise, so I checked underneath when I was done. I was surprised to find that one of the blades was swinging, but the other was fixed. I figured that was wrong and that it needed fixed or tightened. Then I saw a highway mower with its deck lifted up and saw that it had a blade that was swinging also.
So the dumb question is, is one of the blades supposed to swing?
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 | kwschumm
Join Date: Feb 2003 Posts: 5764 NW Oregon 
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2004-07-08 90378
Welcome to TractorPoint! Good to have you aboard.
I've never seen a bush hog with one fixed and one swinging blade, but there are a lot of things I haven't seen. I believe that bush hogs with stump jumpers (a plate mounted to the spindle with the blades mounted to the plate) always have swinging blades. ....
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| DK35vince
Join Date: Feb 2002 Posts: 689 Western,Pa. 
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2004-07-08 90381
The blades (both blades) should swing ....
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| hardwood
Join Date: Dec 2002 Posts: 3583 iowa
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2004-07-09 90391
mascari; Welcome to Tractor Point. Yes both blades should swing. There really is no such thing as a "Dumb Question", the only way any of us learn is by asking questions, so ask away. I may have a question for you someday that will be "Super Dumb". Enjoy your day. Frank. ....
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| 5picker
Join Date: May 2004 Posts: 39 PA
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2004-07-09 90397
mascari,
Welcome! As everyone said...there are no dumb questions! Most brush hogs that have "stump jumpers" (a large circular disc underneath that the blades attach to) are designed to let the blades swing at their attaching point. This is almost always both blades. I never seen one that only one blade could swing. That's not to say there isnt one out there!
Sometimes after setting a while or over the winter, the blade can gald up on it's pivot point. Sometimes a squirt of penetrating oil or the like will loosen it up and sometimes you have to remove the attachment bolt and clean it up a bit. A frozen blade on it's pivot point will usually cause some vibration as well unless it happens to be stuck at exactly the right spot.
You mentioned hitting a few things that "made a lot of noise" so you checked it when you were finished. I've found that waiting until you are finished after hitting things that make strange/loud noises can be disasterous. Sometimes it's better to stop and check for damage before proceeding. Of course, disengage the machine and use extreme safety!
My $.02
Tim ....
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| mascari
Join Date: Jul 2004 Posts: 2 Medina, OH
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2004-07-09 90456
OK thank you all for responding. Yes, the blades are mounted to a saucer shaped disk. The "fixed" blade appears that it too will swing if it hits something hard.
Cool, I thought I was going to have to fix it. :-)
Thanks again!
Nick M ....
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