#Seiko 4006 & 4005 Bell-Matic watches: How to remove the stem & crown
Channel: Mizeni – for Seiko collectors
Date: 2022-09-29

Stem removal on the Seiko 4006 movement (used in Bell-Matic alarm watches) in easy steps:

1. Do not pull the crown out. Just find the stem release lever – a small dimple near the stem.
2. Use something with a fine point to push on the stem release dimple.
3. While pushing on the dimple (not too hard), gently pull the stem out.
4. Repeat the process for the alarm pusher next to the crown.

To replace the stem, you don't need to push on the dimple again. Just push the crown and stem in slowly, rotating it a bit if it gets stuck. The same goes for the alarm pusher.

Note this method also works on the Seiko 4005 (date only) movement.

Get more details about this movement including links to the technical guide here:
https://mizeni.com/movements/seiko-4006?ref=youtube

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