Yes it can. On my b6200 it was leaking into the engine oil and I replaced the seal. Think it was about $6 at my local kubota dealer. Took me a couple hours to get the pump out, change the seal and put it all back together. I was told by many people that it probably wouldn't work and if it did, it wouldn't hold for long. I have to say, so far so good. But then again I only have about 10 hours on the machine since I did it. My pump is weak and I intend to replace it when i get the money together. But it's a quick, cheap, temporary solution to the problem. And if for nothing else, it'll give you the experience for when it's time to change the pump. Good luck.