When I found a two cycle string trimmer, or weed whacker, on the side of the road on Bulk Trash Day here, I picked it up. It needed some care, but the fact is that two cycle gas powered equipment is so simple, I wanted to try to repair it. It now sits in my shed waiting for the next time I need to do some yard work and it works perfectly.
My new-to-me trimmer is a Homelite Trim 'n Edge trimmer, model number UT20004B but the reality is that the vast majority of trimmers are repaired in exactly the same way. The parts are mostly interchangeable and the only reason why I bothered to write about such a simple repair is that nobody definitively said "Yes You Can Do It". I did, it was successful, now head out to the shed and find your tools. A Conglomerate, er, Holding Company bought them up a few years back and now they are owned by the same company that owns Ryobi and a few other well known brands.
Two Cycle motors are getting more rare since the Government mandated that they are not allowed to be produced and sold in the US. The reason is that you have to add oil to the gasoline to lubricate the parts. On the other hand, these motors are so tough that they'll be around for a while and you'll be replacing fuel lines, fuel tanks, and primer bulbs.
Lowes on Oakland Park Boulevard in Oakland Park, it really was a non event.