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Chain sizes by saw model
One page per saw: the factory bar-and-chain combinations we could verify from manufacturer manuals, fit-up charts and chain-maker data — each with the bar-stamp check for that saw, the file size, and where to buy the loop. More models are added as their specs are verified, never guessed.
Stihl
Stihl MS 170 / MS 180
Stihl's entry-level saws. Stock 16″ setup: 3/8″ Picco low-profile, .043″ gauge, 55 drive links — Stihl 61 PMM3.
See chain sizes →Stihl MS 250
One of the best-selling homeowner saws in North America — and the model where published chain specs contradict each other most. Bar-first verification matters most here.
See chain sizes →Husqvarna
Husqvarna 450 Rancher
50.2 cc ranch saw. Stock 18″ setup: .325″ pitch, .050″ gauge, 72 drive links — Husqvarna H30 / X-CUT SP33G.
See chain sizes →Husqvarna 455 Rancher
55.5 cc ranch saw. Factory 20″ setup per Husqvarna's own manual table: 3/8″ pitch, 72 drive links — in both .050″ and .058″ gauge versions.
See chain sizes →Echo
Echo CS-400
40.2 cc homeowner saw on 3/8″ low-profile chain. Oregon's data: 16″ bar, .050″ gauge, 56 drive links, 5/32″ file.
See chain sizes →Echo CS-590 Timber Wolf
59.8 cc firewood saw. Echo's manual specifies Oregon 72LPX chain, 3/8″ pitch; the standard 20″ bar takes 70 drive links at .050″ gauge.
See chain sizes →Poulan / McCulloch
Don't see your saw? The verification guide gets you the three numbers off your own bar in about five minutes, and the identification chart turns those numbers into a chain code in any brand. You can also tell us which model to add next — requests with a photo of the bar stamp go to the front of the queue, because that is exactly the evidence we publish from.