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Thread: Alpha 1 lower clicking noise

  1. #1
    Join Date
    Jan 2018

    Default Alpha 1 lower clicking noise

    Alpha 1 gen 2 lower unit is making a clicking noise when rotated. If I lift up on the input shaft the noise is non existent
    Noise is there in neutral and both forward and reverse

  2. #2
    Join Date
    Nov 2006


    The driveshaft is a floating driveshaft. When you put a load on it, the driveshaft moves up into the correct position. The clicking your hearing when turning it is because the backlash is non existent until the shaft is moved up. In use, it will be fine.

    Tech support

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Sterndrive Engineering, Inc. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiserŽ Alpha OneŽ, R, MR, Gen II and Bravo OneŽ stern drives. MerCruiserŽ Alpha One, R, MR, Gen II and Bravo OneŽ are trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products and or sold by Brunswick Corporation will not apply to products manufactured and or sold by SEI, or to products damaged due to the operation of an SEI product.