Shunter - Thanks for the info. I think I'm going to try to avoid getting it replaced this year. I was hoping I might be able to replace it with a standard off-the-shelf unit. Doesn't look like that is the case. I'll make an attempt to get the shaft out gracefully first. If that doesn't work I guess I'll be forced to get a replacement.

j30381 - Do you mean the size of the shaft? The shaft on joust is 3/4". I haven't measured the log tube but was going to go by Shunter's numbers.