1972 K2 Honda CB750 Tach Seal Installation

VintageMBike

Been Around the Block
Which way does this seal go in? Im going to change it tomorrow.

One side has a track/groove in it that you could run your fingernail through.

The other side is flat with no hollowed out area.

Which way does it go in the head case?

Pics attached.
 

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  • SideTwoWithInnerGroove.jpeg
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  • IMG_9727.HEIC.png
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