Your chainsaw chain is dull or broken? Replace it yourself in 15 minutes. This guide works on all chainsaw brands including Stihl, Husqvarna, Echo, and Chinese saws. Save money and keep your saw running.
Chainsaw chains come in different sizes. You must buy the exact size for your saw or the chain won't fit. The size is determined by:
Find these numbers on your current chain or in your saw's manual. Search "[Your saw model] chain size" to find the exact specifications online.
On the right side of the chainsaw (near the chain), you'll find 2-3 bolts or latches. Loosen them (don't fully remove). This raises the bar just enough to slide the chain off. Some saws have a lever instead of bolts — simply flip it.
Carefully slide the old chain off the sprocket and guide bar. Set it aside. You'll likely notice it's dull (teeth are rounded, not sharp) or may have broken links. Don't worry — that's normal after heavy use.
Take the new chain and position it around the guide bar and sprocket. Make sure the chain teeth point in the same direction as the old one (teeth should point forward at the top of the bar). Thread the chain links over both the front and rear sprockets. The chain should sit flat against the bar.
This is critical. The chain should be snug but not overly tight. Look for the tension screw near the cover — usually a slotted or Phillips head screw. Tighten it slowly until the chain stops sagging. Pull the chain away from the bar — it should snap back into place without catching.
Close the side cover and tighten all bolts firmly. Don't over-tighten — just enough to hold it in place. Replace the spark plug wire (or turn the ignition back on if it's electric start).
Start the chainsaw and let it warm up for 30 seconds. Make a small cut on a scrap piece of wood. The chain should cut smoothly and straight. If it pulls to one side, the chain may be misaligned — stop and recheck the orientation and tension.
Keep It Sharp: A sharp chain is safer and more efficient. Dull chains heat up and are more likely to kick back or bind.
Check Tension Regularly: Chains stretch with use. Check tension every few hours of cutting. Retighten the tension screw if needed.
Oil Level: Most chainsaws have automatic chain oil. Keep the oil reservoir filled. The chain should look wet and glossy. A dry chain wears faster and overheats.
Check our store for quality chainsaw chains and maintenance supplies for all brands.
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