That depends on the model or series. If it is a Courage, then I wouldn't bother. OTOH, if it was a Command or Command Pro, then definitely take a look. The Courage series has two cams, one for each valve, and has the habit of loosening its top cover bolts, which in turn collide with the flywheel, turning the crankcase into scrap. The also will toss their rods for no apparent reason, from what I've read.
The Command series was top notch. Keep them oiled and fed decent fuel, and they'll last.
tom