Echo CS-4920 Chain Saw - 50.1 CC - 3.35 HP*

First, let me say that Sawsuppliers.com has been awesome. They have good prices and good selection and they delivered quickly .They've been kind enough to throw in some goodies as well.

The CS-4920 is by far the easiest chainsaw to start that I've ever had.
Bone cold I can get her going with three or four pulls and when warm she starts on the first pull every time and idles like a champ! I leaned out the hijet about a quarter of a turn or less and at high speed It's beautiful. This engine is sweet.

There is however one what I would call fatal flaw. It doesn't oil well at all with an Oregon bar on it. I can't say how it would do with an Echo bar because I don't have one. The 4920 uses a small husky tail mount. And the way it picks up oil is different than the 4910.
The oil gallery is engineered in a very odd way. Instead of just being a straight slot like most saws, it has a 45° gallery lead in and when the chain is new and shortish this 45° gallery overlaps with the large diameter chain adjustment hole and all of the oil just pours out the bottom of the saw. I think that if this saw had bar guide plates, this might not be an issue, but it doesn't have those plates.
The bar simply rubs up against the plastic and it's not a solid surface.
On this particular tail mount of saw the large holes don't carry the oil but a smaller separate hole above there does and unfortunately this was engineered incorrectly.
I'm going to have to take the saw in for a warranty because I'm burning up my chain.
I really want to love this saw and I think it's beautiful but this fatal flaw is just that, fatal.