Can you replace a Stihl chainsaw chain yourself? Yes, you can easily replace a Stihl chainsaw chain yourself with a few basic tools and by following these simple steps. Learning how to replace a Stihl chainsaw chain is a fundamental part of Stihl chainsaw maintenance and will save you time and money. This guide will walk you through the entire process of a Stihl chainsaw chain replacement, from gathering your supplies to fitting a new chain.
Why Replace Your Stihl Chainsaw Chain?
A dull or damaged chain can make your chainsaw perform poorly and, more importantly, become dangerous. A worn-out chain can lead to kickback, reduced cutting efficiency, and increased strain on your chainsaw’s engine and bar. Regularly inspecting and replacing your Stihl chainsaw chain is crucial for safe and effective operation. You might need to replace your saw chain Stihl if you notice any of the following:
- Dullness: The chain no longer cuts cleanly or requires excessive force to push through wood.
- Damage: Individual chain links, cutters, or the drive link Stihl chain appear bent, broken, or chipped.
- Stretching: While chains stretch naturally with use, excessive stretching can cause poor performance and premature wear on other components.
- Age: Even with proper maintenance, chains have a lifespan and will eventually need replacing.
What You’ll Need for Stihl Chainsaw Chain Replacement
Before you begin, gather all the necessary tools and parts. Having everything ready will make the Stihl chainsaw chain replacement process smoother.
Essential Tools
- Combination Wrench: Most Stihl chainsaws use a specific size wrench, often included with the saw. This is crucial for loosening and tightening the bar nuts and the chain tensioner screw.
- Screwdriver: Some Stihl models may require a flathead screwdriver for adjusting the chain tensioner. Check your chainsaw’s manual.
- Gloves: Heavy-duty work gloves are essential to protect your hands from sharp chain teeth and debris.
- Safety Glasses: Always wear safety glasses to protect your eyes from flying debris.
- Rag or Brush: For cleaning the chainsaw bar and chain area.
- Owner’s Manual: Your Stihl owner’s manual is the ultimate guide for your specific model.
Essential Parts
- New Stihl Chainsaw Chain: Ensure you have the correct chain for your specific Stihl chainsaw model. This information is usually found on the chainsaw’s bar or in your owner’s manual. Key details to match include:
- Pitch: The distance between drive links (e.g., 3/8″, .325″).
- Gauge: The thickness of the drive link that fits into the groove of the guide bar (e.g., .050″, .058″).
- Number of Drive Links: The total count of the drive links on the chain.
- New Stihl Chainsaw Parts (if needed): While not always necessary for a chain replacement, inspect your chainsaw bar and chain for wear and tear. You might consider replacing the guide bar or sprocket if they are significantly worn.
Choosing the Right Chain
Selecting the correct replacement chain is paramount for both performance and safety. Using an incorrect chain can damage your chainsaw and lead to dangerous operating conditions.
| Chain Specification | Why it Matters | How to Find It |
|---|---|---|
| Pitch | The distance between any three consecutive rivets divided by two. It dictates how the chain meshes with the sprocket. | Stamped on the guide bar (often near the base), or found in your owner’s manual. |
| Gauge | The thickness of the drive link that sits in the guide bar groove. Too thick or too thin will cause issues. | Stamped on the guide bar (often near the base), or found in your owner’s manual. |
| Drive Links | The number of teeth on the bottom of the chain that engage with the sprocket and sit in the guide bar groove. | Count them on your old chain, or find the specification in your owner’s manual. It’s also sometimes stamped on the guide bar or the chain itself. |
| Bar Length | While not a chain specification itself, it dictates the type of chain needed. A 16-inch bar needs a chain designed for a 16-inch bar. | Stamped on the guide bar, or found in your owner’s manual. |
| Chain Type | Stihl offers various chain types (e.g., low-profile, professional). Matching this can optimize cutting performance for your intended use. | Refer to your owner’s manual or the Stihl website for recommendations based on your saw model and cutting needs. |
Important Note: While you can technically change a Stihl trimmer chain, this guide focuses on Stihl chainsaw chains. The process for trimmer chains is different and usually involves a much simpler tensioning system.
Step-by-Step Guide to Stihl Chainsaw Chain Replacement
Now that you have your tools and the correct new chain, let’s get started with the Stihl chainsaw chain replacement.
Step 1: Safety First!
Always prioritize safety. Before you begin any work on your chainsaw, ensure the engine is off and has cooled down completely. Engaging the chain brake is also a good practice, although it’s less critical when the chain is being removed.
Step 2: Access the Chain and Bar
Locate the nuts that hold the guide bar to the chainsaw body. These are typically on the side of the chainsaw, near the clutch cover.
- Loosen the Bar Nuts: Using your combination wrench, loosen but do not remove the bar nuts. You’ll likely need to turn them counter-clockwise. Some Stihl models have a built-in tensioning system that may involve a screw accessible from the side or bottom, which you might need to loosen slightly at this stage as well. Your owner’s manual will specify this.
Step 3: Remove the Clutch Cover
Once the bar nuts are loose, you can remove the clutch cover (also called the chain brake cover). This is usually a large plastic piece that encases the sprocket.
- Remove the Cover: Unscrew the bar nuts completely and lift off the clutch cover. Be careful, as it might be slightly dirty or have some chain oil on it.
Step 4: Remove the Old Chain
With the clutch cover off, the guide bar and chain are exposed.
- Slide Off the Old Chain: Carefully slide the old chain off the guide bar. It might be slightly stiff due to tension. You may need to gently push the guide bar forward (towards the front of the chainsaw) to release the tension on the chain, allowing it to slide off the bar and around the sprocket.
Step 5: Inspect the Guide Bar and Sprocket
This is a critical part of Stihl chainsaw maintenance. Before fitting new chain Stihl, take a moment to inspect your guide bar and sprocket.
- Guide Bar Inspection:
- Wear: Check the groove in the guide bar. If it’s worn down significantly or has sharp edges, it needs replacement. Run your fingernail along the groove; if it catches on anything, it’s likely worn.
- Rails: Ensure the rails that guide the chain are parallel. If one side is significantly lower than the other, the bar is worn.
- Oiling Slot: Make sure the oiling slot on the underside of the bar is clear.
- Tip: Check the sprocket nose (if your bar has one). If it’s stiff to turn or worn, the entire guide bar may need to be replaced.
- Sprocket Inspection:
- Teeth: Examine the sprocket teeth. If they are worn down to a point or hooked, they need to be replaced. A worn sprocket will quickly damage a new chain.
- Replacement: If your sprocket needs replacing, this is a more involved process. You’ll typically need a specialized tool to remove the clutch drum and access the sprocket. Consult your owner’s manual or a professional if you’re unsure.
Step 6: Fit the New Chain
Now it’s time for fitting new chain Stihl. Ensure your new chain is oriented correctly. Chains have a specific cutting direction. The cutters should be angled forward, pointing towards the tip of the guide bar.
- Position the Chain: Place the new chain around the sprocket. Then, lay the chain into the groove of the guide bar, starting from the base and working your way to the tip.
- Engage the Sprocket: Ensure all the drive links of the chain are properly seated in the guide bar groove and that the chain loops around the sprocket at the clutch housing.
- Guide Bar Position: Slide the guide bar back into position so that the chain tensioning mechanism (if it’s a screw adjuster) engages with the designated hole on the guide bar.
Step 7: Reinstall the Clutch Cover and Tension the Chain
This is where saw chain tensioning Stihl is crucial.
- Reinstall Cover: Place the clutch cover back over the guide bar and chain. Make sure the chain is properly seated in the clutch cover’s channel.
- Thread Bar Nuts: Thread the bar nuts back onto the studs, but do not tighten them completely yet. Just snug them up enough to hold the cover in place.
- Initial Tensioning: Now, you’ll adjust the chain tension.
- Manual Tensioner: Locate the chain tensioning screw (usually a small screw on the side or bottom of the chainsaw body, near the guide bar). Use your screwdriver or wrench to turn the screw clockwise. This will pull the guide bar back and tighten the chain.
- Tool-less Tensioner (Quick-tension): Some Stihl models have a knob or lever. Follow the instructions specific to your model, which usually involves turning a knob to tighten.
- Check the Tension: The chain should be snug but still able to move freely by hand when wearing gloves. A good test is to pull the chain around the bar. It should move smoothly without binding. You should be able to pull the chain away from the underside of the bar slightly, but it should snap back into place and not sag.
Step 8: Final Tightening
Once you have the correct chain tension, you need to secure everything.
- Tighten Bar Nuts: While holding the guide bar with one hand (to maintain tension), use your combination wrench to tighten the bar nuts securely. Tighten them in an alternating pattern to ensure even pressure.
- Re-check Tension: After tightening the bar nuts, check the chain tension again. Tightening the nuts can sometimes slightly alter the tension. Adjust if necessary, then re-tighten the bar nuts.
Step 9: Test and Adjust
Your Stihl chainsaw chain replacement is almost complete.
- Start the Chainsaw: Start the chainsaw and let it run for a few seconds.
- Check for Sag: Turn the chainsaw off. Check the chain tension again. If it has loosened or become too tight, adjust as needed.
- Cutting Test: If the tension seems right, perform a brief cutting test on a piece of scrap wood. Listen for smooth operation and observe how the chain cuts.
Common Stihl Chainsaw Maintenance Tips Related to Chain Replacement
Maintaining your Stihl chainsaw chain and bar regularly will extend their life and ensure optimal performance.
- Regular Cleaning: After each use, clean the guide bar groove, oiling port, and the area around the sprocket. Debris accumulation can hinder lubrication and cause premature wear.
- Proper Lubrication: Ensure your chainsaw’s automatic oiler is functioning correctly. The chain oil reservoir should be full before use. The chain should appear slightly wet with oil as it runs. If the oiler isn’t working, you can get a Stihl trimmer chain, but the chainsaw won’t be lubricated.
- Sharpening: A sharp chain cuts efficiently and safely. Learn how to sharpen your chain correctly using a file guide and appropriate-sized round file, or have it professionally sharpened. This is a key aspect of Stihl chainsaw maintenance.
- Bar Rotation: Rotate your guide bar every time you change the chain. This helps ensure even wear on both sides of the bar.
- Inspect for Damage: Frequently inspect your chainsaw bar and chain for any signs of damage, such as nicks, cracks, or bent teeth.
Troubleshooting Common Issues
Even with careful work, you might encounter a few snags.
- Chain Too Loose: If the chain sags excessively or falls off, it’s too loose. Re-adjust the tension by tightening the tensioning screw and then re-tightening the bar nuts.
- Chain Too Tight: If the chain is very difficult to move by hand, or if it feels stiff and jerky when running, it’s too tight. Loosen the tensioning screw slightly until it moves freely. A chain that is too tight can cause excessive wear on the sprocket, clutch, and bar, and can even cause the chain to break.
- Chain Not Oiling: If the chain isn’t getting oil, check the oil reservoir level and ensure the oiling port on the bar is clear. Also, check if the oiler outlet on the chainsaw body is blocked.
- Chain Comes Off the Bar: This is usually a sign of a chain that is too loose, a worn guide bar, or a worn sprocket. Ensure the chain is correctly seated in the bar groove and on the sprocket, and check the wear on the bar and sprocket.
Frequently Asked Questions (FAQ)
Q1: How often should I replace my Stihl chainsaw chain?
A1: The lifespan of a Stihl chainsaw chain depends heavily on usage and maintenance. If you sharpen your chain regularly and keep it clean and oiled, it can last for a considerable time. However, you should replace it when the cutters become too dull to sharpen effectively, or if you notice any damage to the drive link Stihl chain or cutters. A good rule of thumb is to replace it when you notice a significant drop in cutting performance that sharpening can’t fix.
Q2: Can I use a non-Stihl chain on my Stihl chainsaw?
A2: Yes, you can use chains from other reputable brands as long as they match the exact specifications (pitch, gauge, and number of drive links) for your specific Stihl chainsaw model and guide bar. However, using genuine Stihl chains often ensures optimal compatibility and performance.
Q3: What happens if I don’t replace a dull chain?
A3: Using a dull chain makes cutting much harder, requires more effort, and can lead to kickback, which is extremely dangerous. It also puts unnecessary strain on your chainsaw’s engine, clutch, and guide bar, potentially causing premature wear and damage to these components.
Q4: Is it difficult to change a Stihl chainsaw chain?
A4: No, with a few basic tools and this step-by-step guide, replacing a Stihl chainsaw chain is a straightforward process that most users can manage. It’s a fundamental part of Stihl chainsaw maintenance.
Q5: How do I know if my guide bar needs replacing along with the chain?
A5: Inspect the guide bar groove for wear. If the groove is significantly widened, uneven, or if the guide bar rails are uneven (one side lower than the other), it’s time to replace the bar. Also, if the sprocket nose at the tip of the bar is worn or stiff, the bar needs replacement. It’s best to replace the chainsaw bar and chain together if either shows significant wear.
By following these detailed steps, you can confidently perform a Stihl chainsaw chain replacement, ensuring your saw remains safe, efficient, and ready for any cutting task. Remember, regular Stihl chainsaw maintenance, including proper chain care, is key to a long-lasting and reliable tool.