How to adjust pull behind bush hog

How to adjust pull behind bush hog

Wondering How to adjust pull behind bush hog? You can easily cut weeds around your property and buildings with a pull behind bush hog, which would usually put a strain on your riding lawnmower.

Bush hogs (also known as “rotary cutters” or “brush hogs”) are without a doubt the most formidable tool for dealing with dense plant growth; they whack through overgrown grass and weeds with ferocity and are a fantastic tool to have.

However, it’s important to make sure your tow-behind brush cutter is set up correctly for the best results.

Here’s how to change the pull behind bush hog for better cutting results, higher quality, and longer blade life, whether you’re using an ATV/UTV or a garden tractor.

How to adjust pull behind bush hog

The 3-point hitch is used to connect these rotary mowers to your tractor, and the power take-off is used to drive them (PTO).

However, some bush hogs use the draw bar to stick to the back of your towing vehicle.

We’ll start with how to change bush hogs that bind to a 3-point hitch.

Bear in mind that depending on the bush hog brand you own (refer to your owner’s manual for specifications), you can need to make a few changes before starting actual field operation.

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A. Adjusting the mower cutting height

A properly set cutting height ensures an effective and secure cutting operation: the cut will be more uniform, the clippings will be distributed more uniformly, and power consumption will be minimized, among other things.

To set the correct cutting height on your bush hog (standard 3 point fast hitch types), follow these steps:

  1. Make sure your tractor and bush hog are parked on flat land.
  2. Place the front of the bush hog with its side skids 1 inch lower (off the ground) than your desired cut height using the three-point hitch control lever. If you want to make a 3” cut, for example, the skids should be 2 inches off the ground.
  3. Specify and set the three-point control lever stop at your desired location using the above example.
  4. Turn off the tractor and take the key out of the ignition.
  5. Finally, level the bush hog deck from front to back by extending or retracting the three-point top connection as desired.
  6. Now change the length of one lower lift arm to level the rotary mower from side to side. Shorten or extend it as required to level the deck.
  7. The bush hog must then be safely blocked up at this height.
  8. Remove the bolts that hold the tailwheel beam in place and allow the tailwheel to rest on the ground.
  9. Align the tailwheel beam between the nearest set(s) of holes in the beam support brackets next. Reinstall the support bolts on both sides of the beam and tighten each bolt and nut once more.

When raising the bush hog, extend the tractor’s top three-point connection so that the front of the deck rises 2 to 2-1/2 inches before the tail-wheel leaves the field. When cutting on rough ground, this helps the rotary mower to precisely follow the contour.

Consider adding optional check chains if the hydraulic 3-point lift is unable to sustain the set height or allows you to continuously pre-adjust the cut height.

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B. Adjusting the Deck Pitch

The deck pitch is the next thing to tweak.

Now, move the deck of your bush hog so that the front is about 34 inches lower than the back for the best performance.

When the implement is run at this angle, it only has to cut grass and other vegetation once. The tractor would not be overworked as a result.

If you want the machinery to mulch grass or other crop material more effectively, change it so that the deck forward is about 34 inches higher than the rear.

At this pitch, the grass is cut twice, resulting in a more even cut and improved cut material distribution.

To make the above adjustments, simply adjust the 3-point hitch until the blade’s cutting edge is the inches lower/higher than at the back as described above.

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How to adjust pull behind bush hog – draw bar mounted bush hogs

The cutting height on draw bar units (which usually cut wider widths) is set as follows:

  1. Place your tractor and bush hog on level ground to begin.
  2. Place the bush hog using the tail-wheel ratchet jack (or hydraulic cylinder) so that the skid shoes are 1 inch lower than the ideal final cutting height. If you want a 3” cut, for example, lift or lower the implement until the skid shoes are 2 inches off the ground.
  3. If you’re changing the hydraulic cylinder, consider adding stroke control spacers on the hydraulic shaft. This will help the hydraulic cylinder retain the set cutting height while the implement is raised and lowered.
  4. Next, change the leveling rod on the bush hog so that the front of the hog is about 34 inches lower than the back.
  5. Finally, change any tractor-equipped lower link check chain, as well as any sway blocks or guide blocks, to prevent the hitch and bush hog from swaying.

Fast Tip: For drawbar-mounted brush hogs, the deck pitch must typically be changed to the specification explained earlier. If you’re uncertain, look up detailed directions in your owner’s manual.

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Final Thought

Avoid using a low cutting height because the implement can continue to hit the ground (with the blades), creating shock loads that could damage the mower in the long run.

Often, make sure the mower is properly attached to the tractor, ATV, or UTV at all times—this is the first step in getting the most out of your bush hog while removing dense vegetation.

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