I have a Toro wheel Horse 312-8. I bought it new in 1992. It has been a work horse and I really love it, 23 years with no trouble except some minor repairs. Last summer it started stalling once it got hot. Took it to the shop and they said it needed the carb. to be adjusted. It worked the rest of the summer with no problems. It worked all early spring with out a hitch, until about a month ago when it started stalling once it got hot. I took it back to the shop this time they said it needed an ignition module they replaced the module spark plug, and fuel filter(which I had already replaced). After $185 I got it home and it was still doing the same thing. Since I have replaced the carb. with a brand new one, and checked the fuel pump. When I started it up it purred like a kitten. I mowed for about fifteen minutes and it started stalling again. I am at a loss at this point don't know where to go from here. Anyone have any thoughts?
Toro Wheel Horse 312-8
Engine Magnum M12S
Spec 471527
Build 1992