Many years ago I has a Montgomery Wards rebranded Lawn Boy but sadly lent it out and it never came back. 10 years ago I brought a 5021 home and forgot it in a shed. A few weeks ago I brought a 7623 home. I need something to trim around the yard and yesterday pulled them both out. Both tanks were empty and looked to have been run dry. I first filled the 7623 up with gas and when I pushed on the drain spring on the float bowl nasty smelly varnish came out and then nothing, ok the needle and float are probably stuck. I moved on to the 5021, primed it 3 times and it fired on the first pull and started on the 2nd. It ran just above idle, I added seafoam and let it run. After about 20 minutes it started smoking up a storm, still loping along at a rough idle like it could die at any time. I wasn't timing it but it sucked the tank dry really fast. I filled it up again and it continued as before and that tank emptied quickly also. When I filled it up for the 3rd time it roared to life seemingly much faster than I remember my old one running and the smoke was largely reduced. I think I have a keeper.
A couple of questions the 5021 looks to be totally original, even has green wheels. Should this have some sort of throttle control? It only has the on/off primer control. It has an outer air cleaner housing but no element or cover, is there an illustrated parts list to find p/n or an alternative? Does the 5021 and 7623 share the same engine family? Are these engines with the good crank bearings?
A couple of questions the 5021 looks to be totally original, even has green wheels. Should this have some sort of throttle control? It only has the on/off primer control. It has an outer air cleaner housing but no element or cover, is there an illustrated parts list to find p/n or an alternative? Does the 5021 and 7623 share the same engine family? Are these engines with the good crank bearings?
