Reply To: PO-15 lower unit question

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November 17, 2025 at 8:42 pm #301598
George Emmanuel
Participant

    US Member

    It is a hardened steel washer that supports the weight and force of the upper driveshaft. Without it, the driveshaft will bottom out on the bushing of the pinion shaft and eat it up.

    George

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    David Bartlett