They were a good little saw in their day, but they are somewhat obsolete now. No chain brake, points ignition, and the vibe control isn`t up to todays standards. They are about 50cc and peak power was down around 8000 rpm. I don`t know the horsepower, but with a properly sharpened 72LG chain they will cut with a Husky 55 in terms of production. I have many, many hours on the bars of this model. Parts are very hard to come by, and at one point, Echo had a recall on this model, replacing it with another, but this is no longer in effect to my knowledge. What work needs to be done? Carb parts are available and the ignition can be swapped for one of those electronic modules from Cutters Choice. Russ