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This teardown is not a repair guide. To repair your Todd Star Adding Machine, use our service manual.

    1. Todd Star Adding Machine Teardown, Remove the side and bottom screws: step 1, image 1 of 1
      • I use a plastic multi-compartment box and beware of screws have different sizes and shapes

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    2. Todd Star Adding Machine Teardown, Hold the number paddles down: step 2, image 1 of 1
      • Rubber bands work great. Need to do this so the paddle fins don't jam in the slots they fit through

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    3. Todd Star Adding Machine Teardown, Remove the internals: step 3, image 1 of 1
      • May have to slide a thin blade up the sides to break the rust free

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    4. Todd Star Adding Machine Teardown, Remove the sum axle and dials: step 4, image 1 of 1
      • Keep them in order

      • Note which side the screws are on

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bevin brett

Member since: 09/29/17

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