1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your ECHO Chainsaw Tensioner Kit, model 43301638330-kit. This kit is designed as an OEM replacement part for ECHO chainsaw models CS-440, CS-4400, and CS-5000. It includes the necessary screw and tensioner components for adjusting chainsaw chain tension.
Please read this manual thoroughly before attempting any installation or maintenance to ensure safe and effective use of the product.
2. Kit Components
The ECHO Chainsaw Tensioner Kit (43301638330-kit) typically includes the following parts:
- 1 x Tensioner Adjuster Screw (Part No. 43301638330)
- 1 x Tensioner (Part No. 43301419830)
Figure 1: Complete ECHO Chainsaw Tensioner Kit assembly. This image shows the tensioner adjuster screw and the tensioner component as a single unit.
Figure 2: Close-up view of the tensioner adjuster screw, a key component for fine-tuning chain tension.
Figure 3: Detailed view of the tensioner component, which houses the adjuster screw and facilitates chain movement.
3. Setup and Installation
3.1 Safety Precautions
- Always ensure the chainsaw engine is off and cool before beginning any work.
- Disconnect the spark plug wire to prevent accidental starting.
- Wear appropriate personal protective equipment (PPE), including gloves and eye protection.
- Refer to your chainsaw's original owner's manual for specific safety guidelines and procedures.
3.2 Installation Steps
This tensioner kit is a direct OEM replacement. The installation process typically involves replacing the existing tensioner assembly. Steps may vary slightly depending on your specific chainsaw model (CS-440, CS-4400, CS-5000).
- Prepare the Chainsaw: Place the chainsaw on a stable, flat surface. Ensure the engine is off and the spark plug wire is disconnected.
- Remove Bar Cover: Loosen and remove the nuts securing the side cover (clutch cover/bar cover) of the chainsaw. Carefully remove the cover.
- Remove Bar and Chain: Remove the guide bar and saw chain from the chainsaw. Note the orientation of the existing tensioner for reassembly.
- Locate and Remove Old Tensioner: Identify the old tensioner assembly. It is usually located near the guide bar mounting studs. Depending on the design, it may be held in place by a screw or simply slide out. Carefully remove the old tensioner.
- Install New Tensioner: Insert the new ECHO tensioner (Part No. 43301419830) into its designated slot on the chainsaw body. Ensure it is seated correctly.
- Insert Adjuster Screw: Thread the tensioner adjuster screw (Part No. 43301638330) into the tensioner component. Do not overtighten; just ensure it is engaged.
- Reinstall Bar and Chain: Place the saw chain back onto the clutch drum and around the guide bar. Position the guide bar onto the mounting studs, ensuring the tensioner pin engages with the hole in the guide bar.
- Reinstall Bar Cover: Replace the side cover and hand-tighten the nuts. Do not fully tighten yet.
- Adjust Chain Tension: Proceed to the "Operating and Chain Tension Adjustment" section for proper tensioning.
4. Operating and Chain Tension Adjustment
Proper chain tension is crucial for safe and efficient chainsaw operation. The new tensioner kit facilitates this adjustment.
- Initial Tensioning: With the side cover nuts hand-tightened, use a screwdriver or the appropriate tool to turn the tensioner adjuster screw. Turning it clockwise will increase tension, and counter-clockwise will decrease it.
- Check Tension: The chain should be snug against the bottom of the guide bar, but still able to be pulled around the bar by hand. There should be no sag on the underside of the bar. A common test is to lift the chain from the top of the bar; the drive links should remain in the bar groove.
- Final Tightening: Once the correct tension is achieved, fully tighten the side cover nuts securely. Re-check the chain tension after tightening, as it can sometimes change slightly.
- Post-Adjustment Check: After running the chainsaw for a few minutes, re-check the chain tension. Chains can stretch slightly when new or during initial use.
Important: An overly tight chain can cause premature wear to the bar, chain, and sprocket, and can lead to overheating. An overly loose chain can derail, causing damage or injury. Always maintain correct tension.
5. Maintenance
The ECHO Chainsaw Tensioner Kit is designed for durability. Regular maintenance of your chainsaw will help ensure the longevity of this component.
- Cleaning: Periodically clean sawdust and debris from around the tensioner mechanism when cleaning the guide bar and chain area.
- Lubrication: While the tensioner itself typically does not require lubrication, ensure the guide bar groove and sprocket nose are properly lubricated as per your chainsaw's manual.
- Inspection: Regularly inspect the tensioner screw and the tensioner component for signs of wear, bending, or damage. Replace the kit if any damage is observed.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chain tension cannot be adjusted. | Tensioner screw stripped or bent; tensioner component damaged or clogged with debris. | Inspect the tensioner kit components. Clean any debris. If damaged, replace the tensioner kit. Ensure side cover nuts are loose during adjustment. |
| Chain tension loosens quickly after adjustment. | Side cover nuts not tightened sufficiently; chain stretching (especially new chains); tensioner not fully engaging guide bar. | Ensure side cover nuts are fully tightened. Re-tension chain after initial use. Verify tensioner pin is correctly seated in the guide bar hole. |
| Tensioner screw is difficult to turn. | Debris in the tensioner mechanism; screw threads damaged; side cover nuts too tight. | Loosen side cover nuts. Clean the tensioner area. Inspect screw threads for damage. If damaged, replace the kit. |
7. Specifications
| Attribute | Detail |
|---|---|
| Product Name | Chainsaw Tensioner Kit |
| Brand | ECHO |
| Model Number (Kit) | 43301638330-kit |
| Compatible Chainsaw Models | ECHO CS-440, CS-4400, CS-5000 |
| Kit Components | 1 x Tensioner Adjuster Screw (43301638330), 1 x Tensioner (43301419830) |
| Product Dimensions | 2.5 x 0.25 x 0.25 inches |
| Item Weight | 0.422 ounces |
| Manufacturer | ECHO |
| ASIN | B01KVS70N0 |
| UPC | 706433452026 |
8. Warranty Information
As an OEM replacement part, this ECHO Chainsaw Tensioner Kit is typically covered by the standard warranty policies for genuine ECHO parts. Specific warranty terms and duration may vary. Please retain your proof of purchase.
For detailed warranty information, please refer to the official ECHO website or contact ECHO customer support directly. Warranty claims are generally handled through authorized service centers or the original point of purchase.
9. Customer Support
For further assistance, technical support, or to locate an authorized service dealer, please contact ECHO customer support:
- ECHO Official Website: www.echo-usa.com
- Contact Information: Refer to the "Contact Us" section on the official website for phone numbers and email support.
- Authorized Dealers: Use the dealer locator tool on the ECHO website to find a service center near you.
