One easy way to sort saws is to look at the emissions sticker and see how many hours they are rated to maintain
emissions specs. The good saws will say 300 hrs. Cheaper saws will say 50 hrs. Interestingly, you can see a 300
hour sticker on a homeowner Echo saw, but only a 50 hr sticker on a Stihl homeowner saw. Stihl doesn't start
rating at 300 hrs until you get to the higher end of their product line. So it's not always what you think. In
case anyone is wondering, the emissions spec relates to quality of pistons, rings, liners, etc, as well as assembly
quality.
That is an interesting metric for the newer saws, if you can find it out. I wonder what the rating is for this
new Makita DCS460 I have here.... I will check.
I have and work on many saws, and I find the sweet spot for years of manufacture to be in the 80s, due
to the adoption of electronic ignitions and plastic fuel tanks, but before the conversion to all-plastic or
nearly all-plastic bodies. The 87 Poulan 4000 I have here is 65cc of glory.
The biggest differentiator on longevity I have found is whether they use 2 or only one piston ring. Pro
saws seem to "all" have 2, tho it is not easy to find out. I imagine the pro saws or better-made saws
also use more durable cylinder metallurgy, too.
As for the current crop of Poulans, I would put them up against the low-end Stihl MS170 in terms of
quality and longevity. You can get a lot of work out of the Poulans if you take care of them. The
usual models you see in the stores are the 3314 and the 4018. That PP5020AV is not as easy to find
in the stores, but definitely a bargain.
Currently refurbishing an 83 Husky 2100. It has many 100s of hours on it.