The Seiko 8420-6140 is a watch model based on the 8420 movement.
Parts List
BA1N10SN00 | crystal - crystal |
25M02NA4 | crown - crown |
0G1800N01 | case back gasket |
DK18B | band - band |
A130AS | others - push pin (for lb) |
84200570XG14 | others - dial |
842061404F | others - case |
82708680 | others - case ring |
0354815 | others - winding stem |
06R11DGH | others - hour hand |
06R11DGM | others - minute hand |
DZ0041B01 | others - crown and stem gasket |
Caliber 8420
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_4.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_5.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_6.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_7.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_8.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420A_caliber_en_9.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420B_caliber_en_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420B_caliber_en_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420B_caliber_en_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/8/8420B_caliber_en_4.jpg)