Introduction
This manual provides detailed instructions for the safe and effective use of your Ryobi Expand-It 17-1/2 in. Universal Hedge Trimmer Attachment (Model RY15704). This attachment is designed to provide 17.5 inches of cutting power, ideal for trimming branches and new growth up to 3/8 inch thick. Its dual-action blades are engineered for crisp, clean cuts while minimizing vibration. Please read this manual thoroughly before operation to ensure proper usage, maintenance, and to prevent injury.
Important Safety Information
Always follow basic safety precautions when using power tools to reduce the risk of fire, electric shock, and personal injury. Keep this manual for future reference.
- Read all instructions before using the product.
- Wear appropriate personal protective equipment (PPE), including eye protection, gloves, and sturdy footwear.
- Ensure the attachment is securely connected to the power head before operation.
- Keep hands and feet away from the cutting blades.
- Do not operate the tool in wet conditions or in the presence of flammable liquids or gases.
- Keep children and bystanders away from the work area.
- Disconnect the power source (battery) before performing any adjustments, cleaning, or maintenance.
Package Contents
Verify that all items are present upon unpacking:
- Ryobi Expand-It 17-1/2 in. Universal Hedge Trimmer Attachment (Model RY15704)
- Blade Cover
- Instruction Manual
Note: Power head and battery are sold separately.
Setup Instructions
- Attaching the Hedge Trimmer Attachment:
Ensure the power head is turned off and the battery is removed. Align the shaft of the hedge trimmer attachment with the coupling on your Ryobi Expand-It power head. Push the attachment into the power head until the locking button on the power head snaps into the hole on the attachment shaft, indicating a secure connection. Tighten the coupling knob on the power head to further secure the attachment.
- Removing the Blade Cover:
Carefully slide the protective blade cover off the hedge trimmer blades. Store the blade cover in a safe place for future use.

Operating Instructions
- Pre-Operation Check:
Before each use, inspect the hedge trimmer blades for any damage or dullness. Ensure all fasteners are tight and the attachment is securely connected to the power head. Clear the work area of any debris or obstacles that could interfere with operation.
- Starting the Tool:
Insert a charged Ryobi 40V Lithium battery into the power head. Engage any safety locks or buttons on your power head, then press the trigger to start the hedge trimmer. The dual-action blades will begin to move.
- Trimming Hedges:
Hold the power head firmly with both hands. Guide the hedge trimmer blades along the hedge or shrub, maintaining a steady and controlled motion. The 17-1/2 inch blades are effective for cutting new growth and branches up to 3/8 inch in diameter. For best results, use a sweeping motion and avoid forcing the blades through thick material.
- Stopping the Tool:
Release the trigger to stop the blades. Engage any safety locks on the power head and remove the battery when finished or before making any adjustments.
Maintenance
- Cleaning: After each use, ensure the tool is off and the battery is removed. Clean the blades and housing with a damp cloth to remove sap, leaves, and debris.
- Lubrication: Periodically apply a light machine oil to the cutting blades to ensure smooth operation and prevent rust.
- Blade Sharpening: Dull blades can tear foliage and strain the motor. Sharpen the blades as needed or have them professionally sharpened.
- Storage: Always reattach the blade cover before storing the hedge trimmer attachment. Store the tool in a dry, secure location out of reach of children.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not inserted correctly or discharged. | Ensure battery is fully seated and charged. |
| Blades jam frequently | Dull blades or attempting to cut material too thick. | Sharpen blades or avoid cutting branches exceeding 3/8 inch. |
| Poor cutting performance | Dull or damaged blades. | Inspect and sharpen or replace blades. |
Specifications
- Brand: RYOBI
- Model Number: RY15704
- Cutting Width: 17.5 Inches
- Blade Length: 18 Inches
- Blade Material: Alloy Steel
- Material: Metal
- Item Weight: 6 Pounds
- Product Dimensions: 6.8"L x 5.6"W x 42.6"H
- Power Source: Battery Powered (compatible with Ryobi Expand-It power heads)
- UPC: 046396860330
Warranty and Support
The Ryobi Expand-It 17-1/2 in. Universal Hedge Trimmer Attachment is backed by a 3-year limited warranty. For warranty claims, technical support, or to locate authorized service centers, please refer to the contact information provided with your power head or visit the official RYOBI website.





