1. Introduction
This manual provides instructions for the proper installation, operation, and maintenance of your Oregon Swift Load Bump Trimmer Head, Part# 55-986. This trimmer head is designed for use with curved shaft trimmers and features a convenient bump and feed mechanism for line advancement. It is engineered to hold up to 20 feet of 0.095-inch trimmer line and allows for quick line replacement without needing to open the head.
Figure 1: The Oregon Swift Load Bump Trimmer Head, Part 55-986. This image shows the complete trimmer head assembly, designed for easy line loading and efficient trimming.
2. Setup and Installation
Before installation, ensure your trimmer's engine is off and the spark plug wire is disconnected to prevent accidental starting. Always wear appropriate safety gear, including gloves and eye protection.
- Remove Existing Trimmer Head: Consult your trimmer's owner's manual for specific instructions on how to safely remove the existing trimmer head. This usually involves securing the shaft and unscrewing the head.
- Attach Oregon Trimmer Head: Align the Oregon Swift Load Bump Trimmer Head with the trimmer's shaft threads. Screw the new head onto the shaft securely. Ensure it is tightened according to your trimmer's specifications to prevent it from loosening during operation.
- Load Trimmer Line: This trimmer head is designed for quick line loading. Refer to the instructions printed on the trimmer head or the packaging for the specific method. Typically, you feed the line through designated eyelets until an equal length protrudes from both sides, then twist the head to wind the line internally without disassembly. The head can hold up to 20 feet of 0.095-inch line.
3. Operating Instructions
Once the trimmer head is securely installed and loaded with line, you are ready to operate your trimmer. Always follow the safety guidelines provided in your trimmer's owner's manual.
- Start Trimmer: Reconnect the spark plug wire and start your trimmer according to its manufacturer's instructions.
- Advance Trimmer Line: The Oregon Swift Load Bump Trimmer Head uses a bump and feed mechanism. To advance the trimmer line, lightly tap the rotating trimmer head on a firm surface (such as the ground) while the engine is running at a moderate speed. This action releases a small amount of line.
- Line Cutting Blade: Most trimmers have a line cutting blade on the guard. This blade will automatically trim the line to the correct length after bumping, ensuring optimal cutting performance.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Oregon Swift Load Bump Trimmer Head.
- Inspect for Wear: Before each use, inspect the trimmer head for any signs of wear, cracks, or damage. Replace the head if it shows significant wear or damage.
- Clean the Head: Periodically clean grass clippings and debris from the trimmer head. This prevents buildup that can impede line feeding or cause imbalance.
- Replace Trimmer Line: When the line runs out, reload it as described in the Setup section. Use high-quality 0.095-inch trimmer line for best results.
- Storage: Store the trimmer head in a clean, dry place when not in use.
5. Troubleshooting
Here are some common issues and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Line does not advance when bumped. | Line is tangled or fused inside the head; insufficient line remaining; head not bumped firmly enough. | Stop the trimmer, disconnect spark plug. Manually pull out line or reload new line. Ensure firm bump on ground. |
| Trimmer head vibrates excessively. | Uneven line length; debris buildup; damaged head. | Ensure line is cut to equal length by the guard's blade. Clean debris from head. Inspect for damage and replace if necessary. |
| Trimmer head difficult to install. | Incorrect threading; debris in threads. | Ensure correct rotation for threading. Clean threads on both shaft and head. Do not force. |
6. Specifications
- Model: 55-986
- Type: Swift Load Bump Trimmer Head
- Compatibility: Curved shaft trimmers
- Line Capacity: Up to 20 feet of 0.095-inch trimmer line
- Weight: Approximately 12 ounces
- Features: Bump and feed line advancement, quick line replacement without opening head
7. Warranty and Support
For information regarding the product warranty, please refer to the documentation included with your original purchase or visit the official Oregon website. For further support or inquiries, you may visit the Oregon Store on Amazon or contact Oregon customer service directly.
