Lawnboy? What's a lawnboy mower? lol As far as I'm concerned they don't exist anymore, as they are no different than any other craftsman, murry, mtd, toro homeowner line, ect...
Hard to believe that a mower that's been around, even has has the same magnesium deck for 30+ years, the engines had changed over the years and then toro bought them out but all in all still was a better grade of machine than most of the other crap around.
I have numerous old ads from magizines from the 50's for Lawnboy mowers. Pretty neet stuff, the 'rotary' mower was a new idea still at the time.
I have a Lawnboy M-series that I bought some 10 years ago, It sat for a couple years a while back but I have since been using it again and it runs like the day I bought it!