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Some great ideas everyone thank you. When it comes to pushing the exhaust valve guide down to where it is supposed to be, does anyone know how much it should stick out? looks like the other cylinder (that had working push rods) was going to fail soon as the guide had moved as well. I attached...

thank you for the explanation. Online, I have seen multiple stories of lost push rods ending up in the bottom of the engine. People would use magnets to fish it out of the dipstick hole. In those cases, they got the old one out, and fixed the problem in the head and they were good to go with...

hmmm okay. What exactly am I looking for in your picture? I'm hoping I can get away with not completely tearing into this thing!

Not a bad idea. It's a free mower so its worth a try!!

Hi all, I was just gifted a broken 2003 MTD yardman with a briggs and stratton 20hp v twin 407577 engine. Supposedly, it lost compression and wouldn't restart. It had very low oil. I pulled the valve covers and one side was good, but the side with the dipstick was all messed up. The aluminum...