Your electric chainsaw is only as good as its chain. Even the most powerful cordless model can struggle if the chain becomes dull. A sharp chain cuts wood cleanly and efficiently, while a dull one causes extra strain on your tool, drains your battery faster, and increases the risk of accidents.
Whether you’re maintaining a 16″ Wild Badger Power 40V Cordless Chainsaw or the lighter 12″ 20V model, learning how to sharpen your chain like a pro will save you time, money, and effort.
Why It’s Important to Sharpen Your Electric Chainsaw
A dull chain can make your saw work twice as hard. You might notice fine sawdust instead of wood chips, excessive vibration, or the chain pulling to one side. These are all warning signs that your chain needs sharpening.
Sharpening your cordless electric chainsaw offers several benefits:
- Better cutting performance: A sharp chain slices through wood quickly with minimal pressure.
- Longer tool life: Sharp teeth reduce motor strain, protecting your saw’s brushless motor and battery.
- Improved safety: A well-sharpened chain grips the wood securely, preventing kickback and unpredictable movement.
- Cleaner cuts: Especially useful when preparing firewood, pruning branches, or crafting wood furniture.
Regular sharpening ensures that your chainsaw stays efficient for every task — from storm cleanup to small-scale construction work.
The Right Tools for the Job
Before you start sharpening, gather the right equipment. Here’s what you’ll need:
- Round file: Choose the correct diameter for your chain (Wild Badger 40V and 20V both use a 3/8" low-profile chain).
- File guide: Helps you maintain a consistent angle while sharpening.
- Flat file and depth gauge tool: For adjusting the rakers (depth limiters).
- Chainsaw vice or clamp: To hold your bar securely while you work.
- Protective gear: Gloves and eye protection are a must.
Most electric chainsaws from Wild Badger Power include a user manual that specifies the exact sharpening angle. Always refer to your model’s guide before filing.
Step-by-Step Guide to Sharpening Your Chainsaw
1. Disconnect Power or Remove the Battery
Before doing anything, ensure your chainsaw is completely powered off. For cordless electric chainsaws, remove the battery to prevent accidental startups.
2. Secure the Saw
Clamp your chainsaw bar in a vice, leaving the chain exposed but movable. This stabilizes the saw, allowing precise filing.
3. Clean the Chain
Dirt and oil buildup can make sharpening uneven. Use a brush or rag to remove debris. If your saw has automatic lubrication—like the Wild Badger Power 40V and 20V models—wipe off excess oil first.
4. File Each Cutter
- Align your round file in the notch of the cutter.
- Hold it at the correct filing angle (usually 25°–35°).
- Push the file smoothly forward, away from you.
- Count 3–5 consistent strokes per tooth.
- File every other cutter on one side, then rotate the saw to do the opposite direction.
Consistency is key — keep your angles and strokes even for a balanced chain.
5. Adjust the Depth Gauges
After sharpening, check the depth gauges (the small metal humps between teeth). If they’re too high, your saw won’t cut effectively. Use a depth gauge tool and a flat file to lower them slightly as needed.
6. Lubricate and Test
Refill the chain oil tank with proper chainsaw bar and chain oil—never use motor or waste oil.
After sharpening and lubricating, make a few test cuts. The saw should produce thick wood chips, not dust, and cut straight without vibration.
Pro Tips for Cordless Electric Chainsaws
- Check tension regularly: A properly tensioned chain should snap back into place when pulled slightly.
- Use high-quality bar oil: Automatic oilers, like those on Wild Badger Power models, perform best with clean, quality lubricant.
- Keep your batteries healthy: Fully charge before use and avoid running them to zero. The 40V 16″ model offers more runtime for heavy cutting, while the lightweight 20V 12″ version is perfect for trimming and quick jobs.
- Sharpen frequently: Don’t wait until your saw stops cutting well. Light touch-ups every few uses will keep your chain in great shape.
When It’s Time to Replace the Chain
Even with good maintenance, every chain has a lifespan. Replace your chain if:
- Teeth are worn down below 4 mm.
- The chain has cracks, broken links, or missing teeth.
- Tension can’t be held properly after adjustment.
Replacement chains are easy to find for most chainsaws for sale today, including those from Wild Badger Power. Always choose a compatible size and pitch for your bar and sprocket.
Maintaining Your Chainsaw Beyond Sharpening
Sharpening is only one part of caring for your saw. Make sure to:
- Clean the air vents regularly to prevent overheating.
- Check the guide bar for burrs or uneven wear.
- Inspect the sprocket for smooth rotation.
- Store properly: After use, clean and oil the chain, then cover the bar before storage.
These habits will extend your chainsaw’s life and ensure it’s ready whenever you need it.
Final Thoughts
Learning how to sharpen your electric chainsaw is an essential skill for anyone who uses one regularly. With just a few minutes of care, you can restore your chain’s cutting performance, extend the life of your equipment, and save the cost of professional servicing.
Whether you’re working with the powerful Wild Badger Power 40V Cordless Chainsaw for large logs or the agile 20V model for quick yard jobs, keeping your chain sharp is the key to professional-level results.
If you’re in the market for a new saw, explore the latest chainsaws for sale at Wild Badger Power. Our durable, easy-to-maintain cordless electric chainsaws combine performance, safety, and convenience—perfect for both homeowners and professionals.
Wild Badger Power’s reliable quality shines not only in our electric chainsaws, but also in our lawn mowers, which were featured on the Better Homes & Gardens Best Push Mowers list 2025—a true testament to our brand’s consistent excellence.