Overview
Built for ECHO CS-400 / CS-400F chainsaws, this replacement chain delivers consistent cuts and reliable durability at a fraction of OEM cost. Ships as a 2-piece set, giving you a ready spare. A sharp chain means less effort, cleaner cuts, and safer operation compared to pushing through wood with worn teeth.
Key specifications
- Bar length: 18”
- Quantity: 2 chains per pack
Compatibility
Fits ECHO CS-400 / CS-400F as a direct replacement for the factory chain. Double-check your model number against the listing to ensure a correct match before installation.
Installation notes
Power down the saw and disconnect the battery or spark plug lead. Remove the side cover and release bar tension. Take the old chain off the bar and sprocket, then thread the new chain into the bar groove, confirming the cutting edges face forward on the top rail. Set the tension so the chain pulls freely without sagging away from the bar, and do a brief test run to verify everything tracks correctly.
Common questions
Q: Will this 2-pack 18 inch chainsaw chain fit my ECHO CS-400F with the stock 18” bar, or do I need to match anything else besides bar length?
Yes, this chain set is made for the ECHO CS-400 and CS-400F with an 18 inch bar. Besides bar length, it’s always smart to confirm your current chain specs on the bar stamp or owner’s manual so the pitch, gauge, and drive link count match your saw exactly.
Q: I have an ECHO CS-400 that cuts a little crooked now—if I install one of these new 18” chains, is there anything I should check during installation?
Yes, make sure the bar rails are clean, the chain is installed in the correct cutting direction, and the tension is adjusted so the chain snaps back into the bar groove without sagging. If the saw was cutting crooked with the old chain, also inspect the bar for uneven rail wear, because a worn bar can keep a new chain from cutting straight.
Q: Since this comes with 2 chains for the ECHO CS-400 / CS-400F, what’s the best way to maintain them so they last longer on an 18” bar?
A good routine is to alternate between the two chains, keep them properly sharpened, and maintain correct chain tension as the chain warms up during use. Also check bar oil flow every time you run the saw and clean the bar groove and oil holes regularly, because poor lubrication is one of the fastest ways to wear out a chain.
