Bravo 1 drive?
There is a kit you buy from mercruiser that has o rings that go on the shaft (3), oring for the water (1), oring for the oil from the reservoir (1).
I think that's it for O rings.
Grease the U joints with some good waterproof grease, lots of grease on the splines and the shaft and slide it in.
Rule of thumb IMO is if the drive slides on and off the boat easily the motor is aligned.
There is a kit you buy from mercruiser that has o rings that go on the shaft (3), oring for the water (1), oring for the oil from the reservoir (1).
I think that's it for O rings.
Grease the U joints with some good waterproof grease, lots of grease on the splines and the shaft and slide it in.
Rule of thumb IMO is if the drive slides on and off the boat easily the motor is aligned.