Mcm 228,pre-alpha outdrive
i am about to put the lower unit on and whereas i've been always afraid about puting on the sterndrive because of the big o-ring ,now i'm afraid about the small o-ring and that's because :a boat mechanic told me that mercruiser changed the o-ring at the top of the vertical shaft and replaced it with a slim one (same external diameter,smaller internal).Some days ago i put the lower unit on and when i disasembled it for some other reason i found down on the shaft the spring of the lower seal together with the o-ring something that never hapened with the standard o-ring.Some others here say to put not at all the o-ring depending on how good is your lower seal.I think i forget this last occasion because my shaft is rebuilt (and not perfect)at the height of the lower seal,so what do you suggest me to do?
i am about to put the lower unit on and whereas i've been always afraid about puting on the sterndrive because of the big o-ring ,now i'm afraid about the small o-ring and that's because :a boat mechanic told me that mercruiser changed the o-ring at the top of the vertical shaft and replaced it with a slim one (same external diameter,smaller internal).Some days ago i put the lower unit on and when i disasembled it for some other reason i found down on the shaft the spring of the lower seal together with the o-ring something that never hapened with the standard o-ring.Some others here say to put not at all the o-ring depending on how good is your lower seal.I think i forget this last occasion because my shaft is rebuilt (and not perfect)at the height of the lower seal,so what do you suggest me to do?
