My new problem with my MF-14 is that after about 15-20 minutes under load, the engine seems to have overheated and died out. It was especially bad with the mower running trying to climb a small low grade. It sputtered down to a stall and almost sounded like it was puffing air. When I lifted the hood, the engine was hot and smoking. Oil level is fine, no dirt blocking the cooling fins or shroud, but gas was low, so I topped up the tank. Started easily, but wouldn't accept any load without dying out.
Pulled it back into the garage, pulled the spark plug, and it's sooty (not wet). Previous owner said he replaced the carb and had it adjusted by a small engine mechanic. Until today, it started well, no evidence of misfire, no backfire ... ran perfectly. Today, it died under load after 15-20 minutes.
Anybody have similar experiences? Need to troubleshoot, and hoping to learn from your experiences. If I'm facing engine rebuild, need to know that, too. I intended to rebuild the engine - just hadn't intended on doing that before next spring!
Thanks in advance.
Edited by ODN, October 13, 2015 - 06:20 AM.