What this is
Two replacement chains for the Echo CS-590 Timber Wolf with its standard 20” bar. Echo’s chain for that bar is 72LPX70CQ, and Oregon’s equivalent is 72LPX070G. This pack is the same size: 20”, 3/8” pitch, .050” gauge, 70 drive links.
One saw, five bar lengths
Echo sells the CS-590 with a 20” bar and approves several others. The chain type stays the same (72LPX, 3/8”, .050”); only the length changes:
| Bar | Echo chain | Drive links |
|---|---|---|
| 16” | 72LPX60CQ | 60 |
| 18” | 72LPX64CQ / 72LPX66CQ | 64 / 66 |
| 20” | 72LPX70CQ | 70 — this chain |
| 24” | 72LPX84CQ / 72LPX81CQ | 84 / 81 |
| 27” | 72LPX93CQ | 93 |
If your saw is still on the bar it came with, it is the 20”. If you’re not sure, count the drive links on the old chain.
The Poulan Pro PP5020AV and PR5020 on their factory 20” bar take the same size; see our Poulan Pro PP5020AV chain.
Fitting it
The CS-590 has a side-access chain tensioner. Echo’s manual says the chain and bar gauge must match and to use only the bar and chain combinations it lists.
