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Adjusting the Roll Axis

For best results, you should adjust the roll axis on your bow sight after mounting it to your bow.

  1. Using a bow vice, hold the bow in place vertically.
  2. Attach a string level to the bow string.
  3. Adjust the bow vice until the bow string is plumb.
  4. Attach a torpedo level to the elevation block of your Xero® A1i Pro bow sight.
  5. Using a 3.5 mm (9/64 in.) hex wrench, loosen the two screws Callout number one at the back of the bow sight.

    Diagram of the roll adjustment on the mount with a callout
  6. Adjust the roll axis until the torpedo level matches the string level.
  7. Tighten the screws to 2.2 N-m (20 lbf-in).
  8. If necessary, tare the bow sight's digital level (Taring the Digital Level).
  9. If necessary, adjust the bow sight's bubble level (Adjusting the Bubble Level).
  10. Remove the string and torpedo levels.

It is possible for your bow's sight plane to shift from vertical at rest to canted at full draw due to riser flex. If this occurs, repeat this process with the bow safely at full draw using a draw board.

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