I have an Echo CS 371 that works great. 18" bar which handles most of the work I run across as a landscaper. This machine has never let me down.
As has been mentioned.....get an extra chain and a way to sharpen them. Some use files - I have a nice Oregon electric sharpener but there's also a Dremel attachment that impresses me allowing sharpening without removing the chain.
Here's the CS -370 which is similar to mine:
ECHO CS-370 36.3cc Easy-Starting Chain Saw - ECHO USA | ECHO USA
And here's the Dremel attachment:
Dremel Sharpening Kit A679-02 at The Home Depot
(it also comes with a mower blade sharpener)
You can (and should) buy a pack of extra sharpening stones if you buy this kit.
Widget Supply: Chain Saw Sharpeners
Hope this helps and good for you to help out your uncle....good luck!
