Hello, and welcome!
Sentry safes come with a factory-set combination which is printed in the owner's manual, so you don't need to 'set' the combination. If you no longer have your manual, unfortunately, there is no way to put a combination on it. Because safe combinations are never available online, the only way to retrieve the lost combination, is to request this from the manufacturer, Sentry. You can do this by visiting the website below, and following all directions:
If you need to contact Sentry, here is the information:
Hours are Mon. - Fri. 8AM - 6PM, Eastern time
I hope this helped and wish you much good luck with your safe!
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