--- title: Dial my combination and open my lock? description: 8500 Mechanical spin dial lock --- [Skip to content](https://resources.sargentandgreenleaf.com/migration/knowledge/knowledgebase/2017/02/24/dial-my-combination-and-open-my-lock-2#main-content) English Show submenu for translations [Get Support](https://resources.sargentandgreenleaf.com/migration/knowledge/kb-tickets/new?hsLang=en) [Customer portal](https://resources.sargentandgreenleaf.com/tickets-view?hsLang=en) ![sg\_logo\_horiz\_rgb\_trans.png\]](https://resources.sargentandgreenleaf.com/hs-fs/hubfs/SandG%20Logos/sg_logo_horiz_rgb_trans.png?height=40&name=sg_logo_horiz_rgb_trans.png) Open main navigation Close main navigation - English Show submenu for translations - [Get Support](https://resources.sargentandgreenleaf.com/migration/knowledge/kb-tickets/new) - [Customer portal](https://resources.sargentandgreenleaf.com/tickets-view) - Main site Main site Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://resources.sargentandgreenleaf.com/migration/knowledge?hsLang=en) 2. [Mechanical Spin Dial Locks](https://resources.sargentandgreenleaf.com/migration/knowledge/mechanical-spin-dial-locks?hsLang=en) 3. [8400-8500 Series](https://resources.sargentandgreenleaf.com/migration/knowledge/mechanical-spin-dial-locks?hsLang=en#8400-8500-series) # Dial my combination and open my lock? ## 8500 Mechanical spin dial lock **Important:** Turn dial slowly and evenly. Do not turn back to regain alignment if you rotate past number. If an error is made, re-dial entire combination. Do not count turns. Count how many times each number is aligned with the opening index (at the 12 o'clock position). Always view the dial and ring straight on, not at an angle. **CAUTION:** The dial should not be pushed in until the combination has been dialed and the dial returned to zero at the opening index. **Use the following procedures to open a lock set on combination 50-25-50:** 1: Turn dial left, past 50 three times stopping on the fourth time you come to it. 2: Turn dial right, past 25 two times stopping on the third time you come to it. 3: Turn dial left, past 50 once stopping on the second time you come to it. 4: Turn dial right stopping at "0." 5: Hold the dial with "0" aligned with the opening index, push the dial in firmly, then release it to activate the lever assembly. 6: Turn the dial to the right until it stops. The bolt is now fully retracted.   **Applicable to:** 8500 Mechanical spin dial lock - [Electronic Push Button Locks](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#main-content) - [A-Series™](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#a-series) - [Digital Time Lock](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#digital-time-lock) - [Model 6123](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#model-6123) - [Model 6124, 6125](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#model-6124-6125) - [Spartan™](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#spartan) - [Titan™](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#titan) - [Keypads](https://resources.sargentandgreenleaf.com/migration/knowledge/electronic-push-button-locks?hsLang=en#keypads) - [Mechanical Spin Dial Locks](https://resources.sargentandgreenleaf.com/migration/knowledge/mechanical-spin-dial-locks?hsLang=en#main-content) - [8400-8500 Series](https://resources.sargentandgreenleaf.com/migration/knowledge/mechanical-spin-dial-locks?hsLang=en#8400-8500-series) - [Model 2937](https://resources.sargentandgreenleaf.com/migration/knowledge/mechanical-spin-dial-locks?hsLang=en#model-2937) - [Model 6730, 6731, 6741](https://resources.sargentandgreenleaf.com/migration/knowledge/mechanical-spin-dial-locks?hsLang=en#model-6730-6731-6741) - [Padlocks](https://resources.sargentandgreenleaf.com/migration/knowledge/padlocks?hsLang=en#main-content) - [Model 8077](https://resources.sargentandgreenleaf.com/migration/knowledge/padlocks?hsLang=en#model-8077) - [ATM Locks](https://resources.sargentandgreenleaf.com/migration/knowledge/atm-locks?hsLang=en) - [Archive](https://resources.sargentandgreenleaf.com/migration/knowledge/archive?hsLang=en#main-content) - [2740A](https://resources.sargentandgreenleaf.com/migration/knowledge/archive?hsLang=en#2740a) - [Z02](https://resources.sargentandgreenleaf.com/migration/knowledge/archive?hsLang=en#z02) - [IP Lock](https://resources.sargentandgreenleaf.com/migration/knowledge/archive?hsLang=en#ip-lock) - [6300](https://resources.sargentandgreenleaf.com/migration/knowledge/archive?hsLang=en#6300) - [2890B](https://resources.sargentandgreenleaf.com/migration/knowledge/2890b?hsLang=en#main-content) - [2890B](https://resources.sargentandgreenleaf.com/migration/knowledge/2890b?hsLang=en#2890b) - [Audit Lock, Model 6126, Model 6127, Model 6128](https://resources.sargentandgreenleaf.com/migration/knowledge/audit-lock-model-6126-model-6127-model-6128?hsLang=en#main-content) - [Audit Lock, 6126, 6127, 6128](https://resources.sargentandgreenleaf.com/migration/knowledge/audit-lock-model-6126-model-6127-model-6128?hsLang=en#audit-lock-6126-6127-6128) - [All Locks](https://resources.sargentandgreenleaf.com/migration/knowledge/all-locks?hsLang=en) - [2740B](https://resources.sargentandgreenleaf.com/migration/knowledge/2740b?hsLang=en) [![Chill listening crop-3](https://resources.sargentandgreenleaf.com/hs-fs/hubfs/SandG%20Logos/sg_logo_horiz_rgb_trans.png?width=88&height=32&name=sg_logo_horiz_rgb_trans.png "Chill listening crop-3")](http://www.sargentandgreenleaf.com?hsLang=en) Sargent and Greenleaf Help Center Copyright © 2026, Sargent and Greenleaf