is there any of you duck people on here that would sonsider him/herself a bad arse when it comes to Mercury outboards. Here is me problem. I have a 1999 60HP Mercury Bigfoot 2 stroke engine. The lower unit was no good and in pieces when I got it. It has a vertical shaft with male slines at the top of the shaft where it couples to the power head in a female slined coupler. I would say the top 6 inches of that shaft have been turned down to 5/8 diameter prior to the slines being cut. The rest of the shaft is 7/8s roughly.
I got a new to me but used lower unit from a 4 stroke. There is a 14 day return policy. I didn't realize until yesterday the vertical shaft on it was not turned down to 5/8s. It is straight 7/8s to the end with the splines cut in it.
My question is can I just change shafts? The pinion gear at the bottom on both has 43 44484 part numbers. There is some other numbers but both have that specific number. I am thinking I can just break down the lower unit, exchange the shafts and rock on.
Anyone in here a Mercury wizbang?