HELP!!!. Water pump mechanical seal tool measurement needed

Does anyone have the proper tool for pressing in the mechanical seal on a 900 rzr xp water pump? I was hoping someone could measure how far in the inner seating surface should be compared to the outer. I just had a seal fail in two rides and I’m worried I am not installing the seal correctly.

Should the inner part of the seal be pushed further onto the shaft than it sits at rest to create a spring load in the seal? Or should it be installed at a relaxed state?

Thanks.

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