Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your new TrueCut Chainsaw Bar & Chain Combo. This aftermarket replacement part is designed to fit various Stihl chainsaw models, including MS440, MS441, MS441C, MS460, MS461, MS640, MS650, and MS660. Adhering to these instructions will help ensure the longevity and safe operation of your chainsaw.
Image: The TrueCut Chainsaw Bar and Chain Combo, featuring a 16-inch bar with a .325x.063" chain, ready for installation.
Setup and Installation
Proper installation of the bar and chain is crucial for safe and effective chainsaw operation. Always refer to your chainsaw's original manufacturer manual for specific instructions related to your model.
- Safety First: Ensure the chainsaw is turned off, the spark plug cap is removed (for gasoline models), and the chain brake is engaged before beginning any work. Wear appropriate safety gloves.
- Remove Old Bar and Chain: Loosen the bar nuts and remove the clutch cover. Carefully remove the old bar and chain.
- Clean Components: Clean any sawdust or debris from the clutch area, bar groove, and oil holes.
- Install New Chain: Place the new chain around the clutch drum, ensuring the cutting edges are facing the correct direction (usually forward on the top of the bar).
- Mount New Bar: Slide the new bar onto the bar studs, aligning the chain drive links with the bar groove.
- Tension the Chain: Replace the clutch cover and hand-tighten the bar nuts. Adjust the chain tensioning screw until the chain is snug against the bar, but can still be pulled freely by hand. The chain should not sag on the underside of the bar.
- Final Tightening: While holding the tip of the bar up, fully tighten the bar nuts. Recheck chain tension after tightening.
- Bar Oil: Ensure the bar oil reservoir is filled with appropriate bar and chain oil.
Operating Instructions
Once the bar and chain are correctly installed and tensioned, your chainsaw is ready for operation. Always follow the safety guidelines provided by your chainsaw manufacturer.
- Pre-Operation Check: Before each use, verify chain tension, bar oil level, and ensure all nuts and bolts are secure.
- Proper Grip: Always hold the chainsaw firmly with both hands.
- Cutting Technique: Allow the chain to do the work. Do not force the saw. Maintain a stable stance and be aware of kickback potential.
- Chain Lubrication: Ensure the automatic oiler is functioning correctly and providing adequate lubrication to the bar and chain during operation.
Maintenance
Regular maintenance extends the life of your TrueCut bar and chain and ensures safe operation.
- Chain Sharpening: Sharpen the chain regularly using the correct file size and angle for a .325" pitch chain. A sharp chain cuts efficiently and reduces wear on the bar.
- Bar Groove Cleaning: Periodically clean the bar groove to remove accumulated sawdust and debris. This ensures proper chain movement and oil flow.
- Sprocket Nose Lubrication: If your bar has a grease fitting on the sprocket nose, lubricate it regularly with a grease gun designed for chainsaw bars.
- Bar Flipping: To promote even wear, flip the guide bar periodically (e.g., every 8-10 hours of use) to distribute wear on both sides.
- Check for Burrs: Remove any burrs that form on the guide bar rails using a flat file.
Troubleshooting
This section addresses common issues you might encounter with your chainsaw bar and chain.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chain not cutting efficiently | Dull chain, incorrect chain tension, insufficient oil. | Sharpen chain, adjust tension, check oil level and oiler function. |
| Chain binds or stops | Chain too tight, bar groove clogged, damaged chain/bar. | Loosen chain tension, clean bar groove, inspect for damage and replace if necessary. |
| Excessive smoke from bar/chain | Lack of lubrication, dull chain, incorrect chain tension. | Check bar oiler, sharpen chain, adjust tension. |
| Chain jumps off bar | Chain too loose, worn sprocket nose, worn drive sprocket. | Adjust chain tension, inspect and replace worn components. |
Specifications
Key specifications for the TrueCut Chainsaw Bar & Chain Combo:
- Brand: TrueCut
- Item Length: 16 Inches
- Chain Type: Full Complement
- Drive Link Count: 72
- Product Dimensions: 6 x 6 x 6 inches (packaging); 5 ounces
- Compatible Stihl Models: MS440, MS441, MS441C, MS460, MS461, MS640, MS650, MS660
Warranty Information
This TrueCut Chainsaw Bar & Chain Combo is an aftermarket replacement part. For specific warranty details, please refer to the documentation provided with your purchase or contact the seller directly. Generally, aftermarket parts come with a limited warranty against manufacturing defects.
Customer Support
For further assistance, technical support, or inquiries regarding your TrueCut Chainsaw Bar & Chain Combo, please contact the seller or retailer from whom you purchased the product. They will be able to provide the most accurate and timely support.