Well, I'm a Lawn-Boy fan for life now, but, I've always been a 2 stroke engine fan(especially outboards) so how could I pass this up? It's a 20684 and I ended up shelling out $35 for it. It was surprisingly clean for setting so many years. I opened up the carb and it was really full of gunk. Got it running, it runs good but will not throttle down, I think I bent a spring while cleaning the carb so i'll check it out tomorrow. I'm also going to have to get a belt for the self propelled, it slips pretty bad. The cables are REALLY stiff too, so gotta get some lube on them.