How do you open a sentry 1250 combination safe? I have the number

Safes with dials are a little more complicated. NEVER close the door after changing the combination. Practice the opening sequence with the door open. If you did it wrong, you can reset and try again

https://www.google.com/search?q=Sentry+Safe+1250.+change+the+combination

I would speak to a locksmith.

I have a sentry safe 1250 .83 cubic and I have the key I was using the safe for awhile without the combination and just the key but now the key wont work and someone messed with the combination part which I dont know the combination i dont know what to do and I dont wanna trash this safe

dear sir i was given a sentury safe#1250 ,serial #g969560 the safe is open how do i figure out the combination?

As you cant look up the combination without the serial number. Your only alternative is to call a locksmith to drill it open or ship it to
A1-Locksmith prepaid freight and ill do it for free.

If you know the combination:

1) Turn the dial to the left a few complete rounds, then stop on 1st number.
2) Turning the dial to the right, pass up the 2nd number once, then stop on it on the next round.
3) Turn the dial to the left directly to the 3rd number then stop.

The handle should open now.

A1 locksmith will tell you.
If your safe doesn't have a key, skip Step 3.
Turn the dial to zero.
Insert your sentry safe key and turn it until the plunger pops out.
Turn the dial to the left (counterclockwise) three times to the first number of the combination (pass the first number of your combination two times, stopping on it the third time).
Turn the dial to the right (clockwise) two times to the second number of the combination (pass your second number once, stopping on it the second time).
Turn the dial to the left to the last number (stop the first time on your last number).
Pull the handle down; cracking sentry safe open.

Lost your sentry safe combination. First, find your safe’s Serial Number. The Serial Number is printed on the small label on the right side of safe ( on paper tag near hinge) or under handle. just note your model # and the serial#. sentry safe lost combination and the opening instructions.

Locksmiths agree sometimes even with the green light the safe’s batteries are not strong enough to retract the latch. Try replacing them with some new alkaline batteries

Locksmith instructions for sentry safes
on how to dial open sentry fire safes.
NOTE: If your safe doesn't have a key, skip Step 3.
Turn the dial to zero.
Insert your sentry safe key and turn it until the plunger pops out.
Turn the dial to the left (counterclockwise) three times to the first number of the combination (pass the first number of your combination two times, stopping on it the third time).
Turn the dial to the right (clockwise) two times to the second number of the combination (pass your second number once, stopping on it the second time).
Turn the dial to the left to the last number (stop the first time on your last number).
Pull the handle down; cracking sentry safe open.