Not long after I signed off from this fabulous site this morning, I got a call from a friend about his Zero Turn. It's a Bad Boy brand with a little over 700 hr. He told me it was making a chirping sound while the engine is running; and leaks oil onto the frame. He and his son replaced the right side head gasket at ~300 hr.
He asked if I'd work on it and I told him, "no problem - load the wagon". So, I hook up my utility trailer and drove to his house to pick it up. After I got home, I unloaded it and parked it in my shop. I removed the right head and found the head gasket was blown.
When I was removing the head, the two lower head bolts were not very tight. I barely used any force while removing. The two upper bolts were tight as a frog's anus. Hope I can say that..... I have no idea why the gasket failed the first time, but I have a suspicion, on the second go 'round, they may not have torqued the bolts to specs.
Anyway, the head doesn't seem to be bad. I cleaned the head surface and check for any warpness. In an area near the damaged gasket, it barely has .004 clearance under the straight-edge. I resurfaced the head with a flat file and that trued it up. I checked the cylinder head surface also and it was found to be true.
This thing must have been leaking for a while. Can you believe I didn't pressure wash this thing before working on it. Working on equipment on a job-site is one thing. I have no choice but to work on it as is(clean, or dirty). But, this thing was here in my shop. I should not have even posted this pic. I will however, give it a good bath before I return it.
I went to the local Bad Boy dealer who is 5 miles from me. They sell X-Mark, Bad Boy and Echo products. They had the gaskets I needed in stock. I'll be replacing the four head bolts, but they had none in stock. They ordered them and should arrive tomorrow.
---to be continued---