1. Introduction
Thank you for choosing the TrueCut Aftermarket Chainsaw Chain. This manual provides essential information for the safe and effective installation, operation, and maintenance of your new chainsaw chain. This replacement chain is designed for specific Jonsered chainsaw models, ensuring optimal performance and durability. Please read this manual thoroughly before installation and keep it for future reference.
Figure 1.1: TrueCut Aftermarket Chainsaw Chain. This image displays the coiled chain, highlighting its cutting teeth and drive links, ready for installation.
2. Safety Information
Always prioritize safety when working with chainsaws. Improper handling or maintenance can lead to serious injury. Adhere to all safety guidelines provided by your chainsaw manufacturer in addition to the following:
- Wear appropriate personal protective equipment (PPE): This includes safety glasses, hearing protection, gloves, and sturdy footwear.
- Ensure the chainsaw is off and the spark plug cap is disconnected before performing any maintenance or chain replacement.
- Inspect the chain for damage before each use. Replace if bent, cracked, or excessively worn.
- Maintain proper chain tension as specified by your chainsaw's manual. Incorrect tension can cause the chain to derail or break.
- Be aware of kickback risks. This TrueCut chain features a low kickback design, but proper operating techniques are still crucial.
3. Setup and Installation
This section details the steps for replacing your chainsaw chain. Refer to your chainsaw's specific manual for detailed instructions on removing the bar and old chain.
3.1. Compatibility Check
This TrueCut chain is compatible with Jonsered Models 2139, 2141, 2145, 2149, 2150, 2152, and 2153. It features a 0.325LP pitch, 0.05" (1.3mm) gauge, and 72 drive links. Verify these specifications match your chainsaw's requirements before proceeding.
3.2. Installation Steps
- Prepare the Chainsaw: Ensure the chainsaw is turned off, the spark plug cap is removed, and the chain brake is disengaged.
- Remove Bar Cover: Loosen the bar nuts and remove the clutch cover/side plate.
- Remove Old Chain: Carefully remove the guide bar and the old chain. Inspect the guide bar for wear and clean any debris.
- Install New Chain: Place the new TrueCut chain onto the guide bar, ensuring the cutting edges face the correct direction (usually forward on the top side of the bar).
- Reattach Bar and Cover: Position the guide bar back onto the chainsaw studs, ensuring the drive links fit into the sprocket. Replace the clutch cover and hand-tighten the bar nuts.
- Adjust Chain Tension: Adjust the chain tensioner until the chain is snug against the bottom of the guide bar, but can still be pulled freely by hand. The drive links should not come out of the bar groove. Refer to your chainsaw manual for precise tensioning instructions.
- Tighten Bar Nuts: Fully tighten the bar nuts.
- Final Check: Manually rotate the chain to ensure smooth movement and correct tension.
4. Operating Instructions
Once the TrueCut chain is correctly installed and tensioned, operate your chainsaw according to the manufacturer's instructions. This chain is designed for efficient cutting with its 0.325LP pitch and 0.05" gauge, featuring a low kickback design for enhanced safety.
- Lubrication: Ensure the chainsaw's automatic oiler is functioning correctly and the oil reservoir is filled with appropriate bar and chain oil. Proper lubrication is critical for chain longevity and performance.
- Initial Run-in: After installation, run the chainsaw for a few minutes at moderate speed, then re-check chain tension. New chains may stretch slightly.
- Cutting Technique: Always use proper cutting techniques to avoid kickback and maintain control of the chainsaw.
5. Maintenance
Regular maintenance extends the life of your TrueCut chainsaw chain and ensures safe operation.
5.1. Sharpening
A sharp chain is essential for efficient and safe cutting. Sharpen the chain regularly using a round file of the correct diameter (typically 4.8mm or 3/16" for 0.325LP pitch chains) and a flat file for depth gauges. Maintain the original angles of the cutting teeth. If unsure, consult a professional.
5.2. Cleaning and Inspection
- After Each Use: Clean sawdust and debris from the chain and guide bar. Check for any signs of damage, such as bent links, cracks, or excessive wear.
- Guide Bar Maintenance: Flip the guide bar periodically to ensure even wear. Clean the guide bar groove to prevent clogging.
5.3. Storage
When storing the chainsaw for extended periods, remove the chain, clean it thoroughly, and lightly oil it to prevent rust. Store in a dry place.
6. Troubleshooting
This section addresses common issues related to chainsaw chain performance.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chain not cutting efficiently | Dull chain, incorrect sharpening angles, improper chain tension. | Sharpen chain, verify sharpening angles, adjust chain tension. |
| Chain smoking or overheating | Insufficient lubrication, dull chain, incorrect chain tension, clogged guide bar groove. | Check oiler, sharpen chain, adjust tension, clean guide bar groove. |
| Chain derails or comes off | Loose chain tension, worn guide bar, damaged drive links. | Adjust chain tension, inspect and replace guide bar if worn, replace damaged chain. |
| Excessive vibration | Damaged chain, unevenly sharpened cutters, worn sprocket. | Inspect and replace chain if damaged, re-sharpen evenly, check and replace sprocket if worn. |
7. Specifications
- Brand: TrueCut
- Model Compatibility: Jonsered Models 2139, 2141, 2145, 2149, 2150, 2152, 2153
- Pitch: 0.325" Low Profile (LP)
- Gauge: 0.050" (1.3 mm)
- Drive Links: 72
- Features: Low Kickback, Dual Raker
- Part Type: Aftermarket Replacement Chainsaw Chain Loop
- Item Weight: Approximately 11 Ounces
8. Warranty and Support
For specific warranty information regarding your TrueCut Aftermarket Chainsaw Chain, please refer to the seller's return policy or contact the seller directly. This product is an aftermarket replacement part. Support for installation and troubleshooting should first refer to this manual and your chainsaw's original manufacturer manual.
For further assistance, please contact North America HVAC, the seller of this product, through the platform where it was purchased.