Chainsaw Repair

I wouldn't keep the 575. The 575/6 platform was a bit of a flop from Husqvarna, it was originally supposed to replace the 372 but they never could get the consumers to jump on board. In the end they made updates to the 372 platform. 

The 288 is a different story. It was known as the best of that platform and you'd have to pry them out of the cold, dead hands people who still use them everyday. This is probably why they are still produced in Brazil, I'm sure they have great demand and a large profit margin as they are a pretty simple design.