I'm in the process of removing the lower unit bolts to change the impeller and seals. It appears that it has been a while since this service because the bolts are corroded in place and very hard to remove. Two of the bolts are bending as I try to remove them and I'm afraid they'll break. I have tilted the motor upside down and applied generous amounts of Liquid Wrench but it doesn't seem to make much difference. Any advice? Should I apply heat on the bolts? I'm afraid they'll snap.
I also noticed while disconnecting the gear shaft that the jam nut was on the bottom and I was under the impression that the jam nut goes on top. Does it matter?