Echo 390, 501, & 620 bar sizes

[tim361]

What bar sizes do people recommend to run on the above saws?

[Acerforestry]

I have owned only the two larger saws - I had an 18 bar initially on the 501 which for me was pushing the limits of the saw, a 15 max or ideally even 13 is ideal. On the 620 which I do still own now I had a 20 inch Sugi (which the prior owner had wrecked by running without oil), which again I'd say is absolute max, is probably best  with 16-18. Echo are underrated saws IMO but if you keep them on warranty by leaving the muffler etc alone you have to accept they don't have the same rev range as Husqvarna especially and so keep a sensible bar size on for the cc. I've just bought a Cs-420 ES for small felling and I reckon that punches above it's weight for a 40cc saw, cracking little thing