Its not the original motor. I bought it three yrs ago didn't know nothing about cubs just wanted one , still don't know much btw. just that I love mine and wouldn't part with It, Any way found it in an ad went and looked liked and bought. The guy said he didn't check oil and blew motor which I wouldn't have known had he not told me, I had looked on the net and knew they had 12hps on the 122 and he said it was replaced with a 12hp. I did a search on motor , had to call kohler found the motor can off I think a 1963 tractor that they only made one yr. still didn't ask about hp because I still thought I had a 12.Then as time past I found the 12hp was a k-301 mine is a k-241 so I assumed it was a 10hp the plate on motor says k-241 ser 780144 spec.no 46227a Any way was told it was a 12 when I bought it. ran it for couple of years thought it was a 10hp. Then had it rebuilt and the guy and also the mechinic told me it was a 12hp. So now baffled again. Is the plate right or is the mechinic that sold the motor to the guy I bought it from and also the other two that rebuilt it for me right