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Discussion Starter · #1 · (Edited)
I am replacing my oil sump gasket, and decided to change the shaft seal while I was at it. It didn't appear to be leaking, but it is 11 years old and while the cover was off was the time to do it.

I have never gone this far into a small engine before, but I have rebuilt Ford 390 and Pontiac 455 and 400 V8s with no problems, so I am not a complete novice on mechanical repairs or tools. I used a proper size seal or race installer tool set. I used a Briggs & Stratton 795387 seal.

I installed the seal flush with the pan surface (twice). The shaft is clean and has no corrosion, rust or rough spots. I greased and oiled both the seal and the shaft, but twice now, when I gently lower the pan, shaft through the seal, it catches the seal and damages it. Am I missing something? Should I install the seal after the pan is attached? This shouldn't be this difficult.
 

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I have looked at your post a few time now trying to see the problem. I recently changed the sump on a Briggs.. Put a sump off of one onto a different similar engine. The seal was still good in my opinion so I went with it. It been a couple months and I have not observed a leak.

Some have suggested not changing them if they weren't leaking, due to a new one starting to leak. However, logic would tell a person to change it while there for good measure. I'm sorry not to have a solution at the moment . but I am puzzled by your issues.

Could you better describe the "damage" ? Maybe wrong seal?
 
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