I just picked up this little gem and it has some issues. This is going to need a replacement head as it sucked a valve and damaged the valve seat beyond repair. Anyone out there have a complete head for this? I noticed that this has a different grill than some other 1300 series tractors does this mean its an earlier model? and are there any other changes to this model over the years of production? I have 2 other Yanmar's that are hard little workers and didn't want to see this one go to the crusher. The P/O said everything including the 4wd worked great before the valve spring failed.
I don't see the parts listed individually, but I would be surprised if the valve seats on these engines aren't replaceable. A machine shop ought to be able to replace them, or make new ones, I imagine.