The engine was running fine then one morning it stopped running. Initial inspection on my part indicated an injector pump problem. The dealership said that the injector pump should not have failed. It could be anything. bring it in and we will put it on the computer and Identify the problem. They put it on the computer and agreed that the injector pump had failed. After replacing the injector pump, the tractor still wouldn't start. With consultation from Kubota, it was decided that the ECU had failed. it was replaced. Parts and labor by this time was in excess of $6,000. The tractor still would not start. At this point, they are looking at the injectors as also failing. Replacing those would bring the cost for parts and labor to around $10,000. The tractor is just a little over 6 years old with 2,400 hours on it. I have performed all the suggested maintenance as detailed in the Operators Manual. The people I have spoken to with much more experience with diesels than I, have said that they have never heard or seen three major components fail simultaneously like I encountered. I am reaching out to other Kubota owners/operators to see if they have had similar simultaneous/chain reaction failures with the L6060 tractor or other Kubota equipment with this engine.