How To Change Blades On A Bush Hog

How to Change Blades on a Bush Hog

Changing blades on a bush hog (rotary cutter) might seem daunting, but with the right approach and safety precautions, it's a manageable task. This guide provides a step-by-step process to help you safely and efficiently replace your bush hog blades. Remember, safety is paramount when working with heavy machinery and sharp blades.

Essential Safety Precautions:

Before you even think about touching a blade, prioritize safety:

• Disconnect the PTO: This is the most crucial step. Completely disengage the power take-off (PTO) shaft from your tractor. Failure to do this could result in serious injury.
• Chock the wheels: Secure your tractor by placing chocks behind the rear wheels to prevent accidental movement.
• Wear appropriate safety gear: This includes heavy-duty gloves, eye protection (safety glasses or a face shield), and sturdy work boots. Hearing protection is also recommended.
• Work in a well-lit area: Ensure you have enough light to see clearly. Avoid working in low-light conditions.
• Use the correct tools: Have all necessary tools readily available before you begin.

Tools You'll Need:

• Socket wrench and sockets: The size will depend on your bush hog model; check your owner's manual.
• Hammer: For loosening stubborn bolts.
• Penetrating oil (like PB Blaster): To help loosen rusted bolts.
• Gloves: Heavy-duty work gloves are crucial for protection.
• Safety glasses/face shield: Protect your eyes from flying debris.
• Wheel chocks: To secure the tractor.

Step-by-Step Guide to Changing Bush Hog Blades:

1. Identify Blade Orientation: Before removing any blades, take note of their orientation. Take pictures or make a sketch showing how the blades are positioned on the rotor. This is crucial for proper reinstallation.

2. Remove the Blades:

   • Spray penetrating oil: Generously apply penetrating oil to the blade bolts. Let it sit for a few minutes to loosen any rust.
   • Unscrew the bolts: Carefully use your socket wrench to unscrew the bolts securing the blades to the rotor. Work slowly and methodically to avoid stripping the bolts. If a bolt is particularly stubborn, use a hammer to gently tap the wrench.
   • Remove the blades: Once the bolts are removed, carefully take off the blades. Be mindful of the sharp edges and handle the blades with caution.

3. Install New Blades:

   • Align the new blades: Carefully align the new blades to the rotor, matching their position to your notes or pictures from step 1. Ensure they are correctly seated.
   • Insert the bolts: Insert the bolts and hand-tighten them.
   • Tighten the bolts: Use your socket wrench to tighten the bolts securely, following the torque specifications in your bush hog's owner's manual. Do not overtighten.

4. Inspect and Test:

   • Visually inspect: Once all blades are securely installed, visually inspect the entire assembly to ensure everything is in place and functioning correctly.
   • Check for balance: A bush hog with unbalanced blades can vibrate excessively. Consider professional balancing if unsure.
   • Test run (with extreme caution): Start the tractor and engage the PTO at a very slow speed. Observe the bush hog for any unusual vibrations or noises. If everything seems normal, proceed to increase the speed gradually.

Choosing Replacement Blades:

Always use replacement blades specifically designed for your bush hog model. Using incorrect blades can lead to damage to your machine and potentially create safety hazards.

Maintaining Your Bush Hog:

Regular maintenance, including inspecting and changing blades, is crucial for the longevity and safe operation of your bush hog. Consult your owner's manual for recommended maintenance schedules.

By following these steps and prioritizing safety, you can confidently change the blades on your bush hog. Remember, if you're uncomfortable performing this task yourself, it's always best to consult a qualified mechanic.