Toro SR4 Super Recycler 108-8130, Model 20090. The slogan on top of the mower says "Guaranteed to Start (GTS) for 5 Years." Actually, it started on the second pull for 17 years of faithful service. Then, a few months ago, the engine seized, and I broke the safety cable trying to turn over the engine. 

A small-engine mechanic can fix this Toro. Or, you can strip it of its  new parts and put them on another Toro. New parts include: Toro 108-3762-03 Super Recycler 21 Inch Blade. Air filter. Spark plug. Gas cap. Toro 138-3249 20090 Quick Release Assembly for Toro Folding Handle (2 of these, in blue).