Corona SL 7180 DualCUT Bypass Loppers Instruction Manual

1. Product Overview

The Corona MAXFORGED DualCUT Bypass Loppers are designed for precision and power when trimming branches. Constructed from high-quality steel with contoured soft grips, these loppers facilitate easy cutting of live stems and limbs.

Image: Corona DualCUT Bypass Loppers, showcasing the overall design and red handles.

2. Key Features

• Patented DualCUT Blade and Hook: Provides two distinct cutting zones for both precision and maximum power.
• MAXFORGED Steel: Ensures durability and prolonged sharpness of the blades.
• DualARC Bypass Blade: Efficiently cuts both green and dry branches.
• Integrated Shock-Absorbing Bumper: Reduces strain on the user's shoulders during prolonged use.
• Comfortable Contoured Grips: Designed to fit various hand sizes comfortably, enhancing control and reducing fatigue.
• High-Carbon Steel Blades: Blades are resharpenable, extending the tool's lifespan.
• Fully Forged Steel Construction: Provides superior strength and reliability.

Image: Detail of the MAXFORGED steel blades, highlighting their robust construction.

Image: The comfortable contoured grips on the lopper handles, designed for user comfort.

3. Setup and Initial Use

The Corona SL 7180 DualCUT Bypass Loppers come pre-assembled and ready for immediate use. No complex assembly is required. Before first use, inspect the blades for any packaging residue and ensure they open and close smoothly. It is recommended to wipe the blades clean with a dry cloth.

4. Operating Instructions

These loppers are designed to cut live stems and limbs up to 2 inches in diameter. Always wear appropriate safety gear, including gloves and eye protection, when operating the tool.

4.1. Cutting Technique

1. Positioning: Open the lopper handles wide enough to encompass the branch. Position the branch as deep as possible into the jaws, near the pivot point, for maximum leverage.
2. DualCUT Advantage: Utilize the patented DualCUT blade and hook. For smaller, precise cuts, use the tip of the blade. For larger, tougher branches, position the branch closer to the base of the blade where the hook provides additional grip and power.
3. Cutting Action: Apply steady, firm pressure to the handles until the branch is severed. Avoid twisting or jerking the loppers during the cut, as this can damage the blade or the branch.
4. Branch Diameter: Do not attempt to cut branches exceeding 2 inches in diameter to prevent damage to the tool and potential injury.

Image: Loppers positioned to cut a branch, demonstrating proper cutting technique.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your loppers.

5.1. Cleaning

• After each use, remove sap, dirt, and debris from the blades and pivot area using a stiff brush or cloth.
• For stubborn sap, use a specialized sap remover or a cloth dampened with mineral spirits.
• Dry the blades thoroughly to prevent rust.

5.2. Lubrication

• Apply a few drops of light machine oil to the pivot bolt and blade surfaces after cleaning to ensure smooth operation and prevent rust.

5.3. Sharpening

• The high-carbon steel blades are resharpenable. Use a sharpening stone or file designed for garden tools.
• Follow the original bevel of the blade when sharpening. Sharpen only the cutting edge, not the flat side of the bypass blade.
• Regular sharpening will maintain cutting efficiency.

5.4. Storage

• Store loppers in a dry place to prevent rust.
• Keep the blades closed and secured when not in use to prevent accidental injury.

Image: The resharpenable blade of the loppers, emphasizing ease of maintenance.

6. Troubleshooting

• Difficulty Cutting: If the loppers are difficult to close or cut cleanly, the blades may be dull or dirty. Clean and sharpen the blades as described in the Maintenance section.
• Blades Sticking: Sap or debris can cause blades to stick. Clean the blades and pivot point thoroughly and apply lubricant.
• Blade Damage (Notches/Dents): If the blade develops notches or dents, especially after cutting thick or hard wood, it indicates the blade may have been subjected to excessive force or used on material beyond its capacity. These can often be filed out with a suitable sharpening tool. Ensure you are cutting within the recommended 2-inch diameter limit.
• Handles Slipping: If the grips on the handles feel loose, ensure they are properly seated. If they continue to slip, they may need to be re-secured or replaced.

7. Specifications

Image: Loppers demonstrating their capability to cut branches up to 2 inches in diameter.

8. Warranty and Support

For warranty information, product support, or to purchase replacement parts, please visit the official Corona Tools website or contact their customer service department. Keep your purchase receipt as proof of ownership.