ideal_trucks
ArboristSite Lurker
I bought an 028 Stihl recently and have been working on getting it up and going. It was not oiling when I got it, so I pulled the oil pump and cleaned out a lot of gunk in it that had it totally stopped up. I bought a new gasket between the pump and case. I put it together, run in a little on the bench, checked to make sure it was oiling fine, and cut it off, left it sitting, and came back a few days later and workbench was covered in oil. So, I pulled the pump again cleaned the surfaces again, and reattached, making sure I had it very tight. I didn't start it back up. I let it set for a week or so, came back to look and there was no oil. I let it set another week or so, and oil everywhere.
I pulled another pump from a parts saw I had and put on it, and cut some wood for about 10 minutes, and noticed I was pouring oil out all around the bar, coming from the oiling hole. Cut off and it was still pouring out. I took off the clutch cover and noticed that the pump was not the right pump. It had the plastic gear inside, and the pin holding the gear in was dropping down. With the saw, off, if the oil pump gear backed out, oil would pour out the oiling hole. I don't know how that's possible unless there's some sort of vacuum.
Any thoughts?
I pulled another pump from a parts saw I had and put on it, and cut some wood for about 10 minutes, and noticed I was pouring oil out all around the bar, coming from the oiling hole. Cut off and it was still pouring out. I took off the clutch cover and noticed that the pump was not the right pump. It had the plastic gear inside, and the pin holding the gear in was dropping down. With the saw, off, if the oil pump gear backed out, oil would pour out the oiling hole. I don't know how that's possible unless there's some sort of vacuum.
Any thoughts?