Overview
This aftermarket 20-inch replacement chain is designed to fit select Echo chainsaw models. Over time every chain stretches, dulls, and eventually needs replacing. This aftermarket option matches the OEM pitch, gauge, and drive-link count so you can install it directly without modifications. A fresh chain also reduces strain on the bar and sprocket.
Key specifications
- Bar length: 20”
- Type: Semi-chisel (aftermarket replacement)
Compatibility
This chain is designed as a direct replacement for select Echo chainsaws. Double-check the pitch, gauge, and drive-link count on your existing bar stamp before purchasing. These three measurements must all match for safe operation.
Installation notes
Kill the engine or remove the battery and let the saw cool. Loosen the bar cover and push the bar in to release chain tension. Remove the worn chain from the bar groove and sprocket. Fit the new chain into the groove, wrap it around the nose sprocket, and engage it on the drive sprocket. Pull the bar outward to tension, tighten the cover nuts, and dial in the tensioning screw until the chain sits snug against the bar rail with about 1/8-inch of pull.
Common questions
Q: Will this 20 inch chainsaw chain fit my Echo CS-590-20AA, or is it only for the standard CS-590?
Yes, this chain is made to fit the Echo CS-590, CS-590-20, CS-590-20AA, and CS-600 when using a 20 inch bar. The key is matching the saw model and bar length, so if your CS-590-20AA still has the original 20 inch setup, this chain is the correct fit.
Q: I have an Echo CS-600 with a 20 inch bar—do I need to make any adjustments when installing this replacement chain?
Before installing, make sure the chain is routed in the correct cutting direction and seated fully in the bar groove and around the drive sprocket. After tensioning, the chain should pull slightly away from the bar but the drive links should stay engaged, and it’s a good idea to recheck tension again after the first few minutes of cutting.
Q: How often should I sharpen and maintain this 20 inch chain on my Echo CS-590 to keep it cutting well?
Sharpen the chain whenever you notice the saw pulling to one side, making fine dust instead of chips, or requiring extra pressure to cut. Keep the chain properly tensioned, maintain bar oil flow, and inspect the cutters and drive links regularly, since a well-oiled and correctly sharpened chain will last longer and cut more safely.
