1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your new Husqvarna 20-inch chainsaw guide bar, model 596007572. This genuine Husqvarna part is designed for specific Husqvarna chainsaw models and other compatible brands requiring this part number. Please read these instructions carefully before use to ensure safe and effective performance.
Important Safety Notice: Always refer to your chainsaw's original instruction manual for specific safety warnings and procedures before installing or using any chainsaw component.
2. Product Specifications
The Husqvarna 20-inch Chainsaw Guide Bar (Model 596007572) is a genuine OEM replacement part designed for durability and performance.
Image 2.1: Husqvarna 20-inch Chainsaw Guide Bar. This image shows the full length of the guide bar, highlighting its robust construction and the Husqvarna branding.
- Part Number: 596007572
- Length: 20 inches
- Pitch: 3/8 inch
- Gauge: .058 inch
- Drive Links: 72
- Model Series: HT388
- Product Dimensions: 63.5 x 12.7 x 2.54 inches (25 x 5 x 1 inches)
- Item Weight: 1.3 pounds
- Manufacturer: Husqvarna
Image 2.2: Close-up view of the Husqvarna Chainsaw Guide Bar. This image provides a detailed look at the guide bar's tip and side, showing the chain groove and material finish.
3. Installation
Proper installation of the guide bar is crucial for safe and efficient chainsaw operation. Always wear appropriate personal protective equipment (PPE) including gloves and eye protection during installation.
- Ensure Chainsaw is Off: Before beginning, ensure the chainsaw engine is off, the spark plug cap is disconnected (for gasoline models), or the battery is removed (for electric models) to prevent accidental starting.
- Remove Old Guide Bar and Chain: Loosen the bar nuts and remove the clutch cover. Carefully remove the old chain and guide bar.
- Clean Mounting Area: Clean any sawdust, debris, or oil residue from the clutch area, guide bar mounting studs, and chain tensioner mechanism.
- Install New Guide Bar: Place the new Husqvarna guide bar onto the mounting studs. Ensure the guide bar's slot aligns with the tensioner pin.
- Install New Chain: Route the chainsaw chain around the clutch sprocket and into the groove of the guide bar. Ensure the cutting edges of the chain are facing the correct direction.
- Replace Clutch Cover: Reinstall the clutch cover, making sure the chain tensioner pin engages with the guide bar. Hand-tighten the bar nuts.
- Adjust Chain Tension: Adjust the chain tension screw until the chain is snug against the guide bar but can still be pulled freely by hand. The chain should not sag on the underside of the bar. Refer to your chainsaw's manual for precise tensioning instructions.
- Tighten Bar Nuts: Fully tighten the bar nuts to secure the guide bar and clutch cover.
- Check Lubrication: Ensure the chainsaw's oil reservoir is filled with appropriate bar and chain oil.
4. Operation Guidelines
Once the guide bar and chain are correctly installed and tensioned, follow these general guidelines for operation:
- Pre-Operation Check: Before each use, check chain tension, bar and chain oil level, and ensure all nuts and bolts are tight. Inspect the guide bar for any damage or excessive wear.
- Proper Lubrication: Adequate lubrication is essential to prevent premature wear of the guide bar and chain. Ensure the automatic oiler is functioning correctly.
- Chain Sharpness: A sharp chain is critical for safe and efficient cutting. A dull chain will cause the guide bar to wear unevenly and can lead to kickback.
- Cutting Technique: Use proper cutting techniques as outlined in your chainsaw's instruction manual. Avoid forcing the guide bar into the wood, and let the chain do the work.
- Avoid Pinching: Be aware of situations where the guide bar can get pinched in the wood, which can cause kickback or damage to the bar.
5. Maintenance
Regular maintenance extends the life of your guide bar and ensures safe operation.
- Clean Guide Bar Groove: Regularly clean the guide bar groove to remove sawdust and debris that can impede chain movement and oil flow. A guide bar cleaner tool can be used for this.
- Flip Guide Bar: To promote even wear, flip the guide bar periodically (e.g., after every 8-10 hours of use). This helps distribute wear on both sides of the bar.
- Check for Burrs: Inspect the guide bar rails for burrs, especially on the top edge. File down any burrs with a flat file to prevent them from interfering with chain movement.
- Inspect Guide Bar Tip: Check the guide bar tip (sprocket nose, if applicable) for wear or damage. Ensure the sprocket rotates freely and is well-lubricated.
- Lubricate Sprocket Nose: If your guide bar has a sprocket nose, lubricate it regularly using a grease gun designed for chainsaw guide bars.
- Replace When Worn: Replace the guide bar if the rails are spread, cracked, or if the groove depth is insufficient to support the chain drive links properly.
6. Troubleshooting
This section addresses common issues related to the guide bar. For chainsaw-specific troubleshooting, consult your chainsaw's manual.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chain binds or stops | Incorrect chain tension, dull chain, clogged guide bar groove, insufficient oil. | Adjust chain tension, sharpen or replace chain, clean guide bar groove, check oiler. |
| Uneven guide bar wear | Consistent cutting on one side, dull chain, lack of flipping the bar. | Flip guide bar regularly, ensure chain is sharp, use proper cutting technique. |
| Guide bar overheating | Insufficient lubrication, dull chain, incorrect chain tension. | Check oiler function and oil level, sharpen chain, adjust chain tension. |
| Chain jumps off guide bar | Loose chain tension, worn guide bar rails, incorrect chain for bar. | Adjust chain tension, inspect and replace worn guide bar, ensure correct chain pitch and gauge. |
7. Warranty Information
This Husqvarna guide bar is a genuine OEM part. For specific warranty details, please refer to the warranty documentation provided with your original Husqvarna product purchase or contact Husqvarna customer support directly. Generally, genuine parts are covered against defects in material and workmanship under normal use.
8. Customer Support
For further assistance, technical support, or to inquire about other genuine Husqvarna parts and accessories, please contact Husqvarna customer service or visit their official website.
- Husqvarna Official Website: www.husqvarna.com
- Husqvarna Store on Amazon: Visit the Husqvarna Store
- Contact Information: Refer to the Husqvarna official website for the most current contact details, including phone numbers and service center locations.
