It takes the same bar as a Husqvarna 550 or 555. Commonly called small Husky mount 095 in Oregon code.
It has an inboard clutch and small spline sprocket. So using .325 chain is realistically possible though not popular on this site.
They managed to meet emission target without electronic controls. It has a small reed valve for a portion of the air, I believe the part that does not get gas mixed in.
My complaints would be the plastic clutch cover that does not put pressure on the bar over a large area and I find reliable restarting is done after setting the fast idle and that means setting the chain brake.
Maybe EA means motor saw in Japanese. Interesting question.