I had the same problem with my Craftsman LT1000 tractor. It wouldn't turn over. I purchased a new battery, used it all day and the next time I went to start it, same issue. Took the battery back and they tested. Perfect battery. So I started looking into other possibilities. I noticed I smelled gas when this happened. It seemed like the engine was locked up. I took the air filter off and clamped the gas line and waited a while. Boom, it started. So I replaced the gas filter and installed a shut off valve on the gas line. As long as I remember to shut the gas off after using the tractor all day, I don't have this problem. If I forget to shut the gas off, it locks up. Some kind of vapor lock. Hope this helps.
It looks like the cradle that holds the ink cartridge in place. I have two in my Cannon printer. One that holds the black cartridge and one that holds the color. Open the printer and look to see if one of the cradles is missing.