Be sure to use a purpose made hose for this. Some think a conventional hose is appropriate for this use but it is not. The price is not enough to make a cheap alternative a good idea. replacing the cutlas bearing is also a good idea as is checking the shaft for true.
After it is all back together and in the water for at least a week, check the alignment.
HOSE FOR PACKING BOX 1 1/2"I.D. FOR 3/4" SHAFT 103999