don't do what i did by the way. had a pump that was leaking on the motor side of the bell housing so i took it apart..the instruction manual for the sta-rite was great in terms of how to tear it down (my first time). what i should have done though was the seal was actually about 5 separate pieces. i took them apart paying attention to how it went together and left the pieces apart on my bench..then i got caught up in something else for a few hours, came back to reassemble and forgot how everything went together. so i thought..no problem..there's an exploded diagram in the manual on the pdf online..problem is, the pictures are way too tiny and all references i found basically showed it assembled! after cursing my stupidity and staring at the thing for half an hour, i took a guess on what seemed logical to my brain anyway..lo and behold it worked out fine and no more leaks. in hindsight, i would have done 3 things:

1) for the 10 minutes it would take for me to disconnect the motor, i'll bring it in the house next winter. what i thought was the motor seal may well have simply been water coming off the ring on the bell housing and the big o-ring shrunk a bit over winter as i simply put the old seal back together, used some non hardening gasket in the right places and everything is fine. if i had run it the way it was for awhile until it was good and warm, it might have been fine. taking it in the house should alleviate any cold shrink on the seals and given it was a newly rebuilt motor, it wouldn't have hurt after last season to tap the big ring and tighten it a bit and torque the 4 bolts holding the motor onto the rest of the pump. didn't occur to me until after i was done

2) if i do have to replace a seal, i will stack the pieces in order of assembly. (the good news is that the company who sold me the pump are sending me a complete rebuild kit including the seal, o-rings and the round plastic thingie inside..i think it's about a 100 dollar kit that they are sending, just to be on the safe side. cheaper for both of us then the time for them to rebuild and the freight from canada to the u.s. and back)

3) don't push the pump housing pieces together with the end cap off if yours has one! that starter switch is a tad flimsy and i snapped it in half. i used the switch from my spare sta-rite pump..but was able to jb weld the original switch together and it would work fine)

4) hmmm..i said 4 things..oh yeah, have a drink when i get frustrated

i expected taking apart and putting back together would be rather daunting first time out..aside from my stupidity with the seal and switch, it was easy as can be