1. Introduction
This instruction manual provides essential information for the safe and effective installation, operation, and maintenance of your UpStart Components L68 22BPX chainsaw chains. Please read this manual thoroughly before using the product to ensure proper handling and to maximize the lifespan and performance of your chainsaw chain. Adhering to these guidelines will help prevent injury and ensure optimal cutting results.
2. Product Overview
The UpStart Components L68 22BPX chainsaw chain is designed as a high-performance replacement for Stihl 025C chainsaws. This package includes six (6) individual chains, engineered for smooth cuts, reduced vibration, and enhanced durability. Each chain features a .325" pitch, 0.063" gauge, and 68 drive links, suitable for 18-inch guide bars.
Image: Packaging for the UpStart Components L68 22BPX Chainsaw Chain, showing product specifications and branding.
3. Safety Information
Chainsaws and their components can be dangerous if not handled correctly. Always prioritize safety. Failure to follow safety instructions can result in serious injury.
- Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety glasses or a face shield, hearing protection, heavy-duty gloves, a safety helmet, and protective legwear (e.g., chainsaw chaps).
- Chainsaw Safety Manual: Refer to your chainsaw's original instruction manual for specific safety guidelines related to its operation.
- Chain Handling: Chains are extremely sharp. Handle new and sharpened chains with extreme care to avoid cuts. Always wear gloves when handling the chain.
- Power Disconnection: Before performing any installation, maintenance, or inspection on the chainsaw, ensure the engine is off and the spark plug lead is disconnected to prevent accidental starting.
- Work Area: Ensure your work area is clean, well-lit, and free from obstructions.
4. Setup and Installation
Proper installation is crucial for safe and efficient chainsaw operation.
4.1. Preparation
- Ensure the chainsaw engine is turned off and the spark plug lead is disconnected.
- Place the chainsaw on a stable, flat surface.
4.2. Removing the Old Chain
- Loosen the bar nuts that secure the side cover.
- Remove the side cover and the old chain.
- Clean any sawdust or debris from the guide bar groove, sprocket, and side cover area.
4.3. Selecting the Correct Chain
It is critical to match the new chain's specifications (pitch, gauge, and number of drive links) to your chainsaw's guide bar. This chain is specifically designed for Stihl 025C chainsaws with an 18-inch guide bar, requiring a .325" pitch, 0.063" gauge, and 68 drive links. Verify these specifications on your existing guide bar or chainsaw manual.
4.4. Installing the New Chain
- Carefully place the new chain around the clutch drum sprocket.
- Guide the drive links into the groove of the guide bar.
- Ensure the cutting edges of the chain are facing in the correct direction (usually indicated by an arrow on the chain or guide bar, or by the cutting edge facing forward on the top of the bar).
- Slide the guide bar back into position, ensuring the chain tensioner pin engages with the hole in the guide bar.
Image: A single UpStart Components chainsaw chain laid out, illustrating the individual links and cutting teeth.
4.5. Tensioning the Chain
- Replace the side cover, but only hand-tighten the bar nuts.
- Adjust the chain tension screw until the chain is snug against the bottom of the guide bar, but can still be pulled freely by hand. There should be no slack on the underside of the bar.
- A properly tensioned chain should allow you to pull the drive links out of the bar groove by about 1/8 to 1/4 inch (3-6 mm) at the center of the bar.
- Once tensioned, fully tighten the bar nuts.
4.6. Final Checks
- Reconnect the spark plug lead.
- Start the chainsaw and run it at medium speed for a short period to allow the chain to seat properly.
- Re-check the chain tension after this initial run, as new chains can stretch slightly. Adjust if necessary.
5. Operating Considerations
While this manual focuses on the chain, proper operating practices are essential for its performance and longevity.
- Lubrication: Always ensure your chainsaw's oil reservoir is filled with appropriate bar and chain oil. Proper lubrication is vital to reduce friction, heat, and wear on the chain and guide bar.
- Chain Tension: Regularly check chain tension during operation, especially during the first hour of use with a new chain. A loose chain can jump off the bar, and an overly tight chain can cause excessive wear and damage.
- Cutting Technique: Allow the chain to do the work. Do not force the chainsaw into the wood. Maintain a firm grip and proper stance to control the saw.
- Avoid Obstacles: Do not cut into dirt, rocks, or metal, as this will dull or damage the chain instantly.
6. Maintenance
Regular maintenance extends the life of your chainsaw chain and ensures safe operation.
- Sharpening: A sharp chain cuts efficiently and safely. Sharpen the chain regularly using the correct file size and angle for a .325" pitch chain. Dull chains can cause kickback and excessive wear on the chainsaw.
- Cleaning: After each use, clean the chain to remove sawdust, resin, and debris. A clean chain operates more smoothly and allows for easier inspection.
- Inspection: Periodically inspect the chain for damaged or cracked links, stretched rivets, or excessive wear on the drive links and cutters. Replace the chain if any significant damage is found.
- Guide Bar Maintenance: Flip the guide bar periodically to ensure even wear. Clean the guide bar groove and oil holes regularly.
- Storage: When not in use, clean and lightly oil the chain before storing it in a dry place to prevent rust.
Image: A new UpStart Components chainsaw chain coiled, ready for installation or storage.
7. Troubleshooting
Here are common issues and their potential solutions related to chainsaw chain performance:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chain not cutting efficiently | Dull chain, incorrect tension, insufficient lubrication | Sharpen chain, adjust tension, check oil reservoir and pump |
| Chain jumping off guide bar | Incorrect tension, worn sprocket, worn guide bar groove | Adjust tension, inspect and replace sprocket or guide bar if worn |
| Excessive vibration | Incorrect tension, damaged or bent chain links | Adjust tension, inspect chain for damage and replace if necessary |
| Chain smoking or overheating | Insufficient lubrication, dull chain, overly tight chain | Check oil, sharpen chain, adjust tension |
8. Specifications
- Model: L68 22BPX
- Length: 18 inches (45 cm)
- Pitch: .325 inches
- Gauge: 0.063 inches
- Drive Links: 68
- Quantity: 6 chains per pack
- Compatibility: Stihl 025C Chainsaw
9. Warranty and Support
Please note that this product is an UpStart Components Brand replacement part. Any warranties for this product are offered solely by UpStart Components. For support, questions, or warranty claims, please contact UpStart Components directly through their official channels.