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- Apr 28, 2014
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Push rods bent because the head was overheated and the valve guide worked its way out. 90% of the time from mice nest blocking off the air cooling fins , or a bunch of grass plugging them up.
You can try to tap it back in but unless I know the person, I wont do it because it may last years or an hour before it comes out again. The warranty on driving them back in ends when the machine goes past the door of my shop. Its best to just replace the cylinder head and be done with it, while you have the tin covers off clean it out as best you can to eliminate it from happening all over again.
The amount of baked on crude was alarming. Soaking it in a solvent did nothing. I finally had to put a brush on my dremel to remove it after I had scraped and scraped it with a metal file. I'm going to clean up the cylinder today and reassemble the head, then I will take a closer look at the right cylinder and see if I have to do some aggressive cleaning on it also.