Simplex 1000 lever handle when correct combo put in lock combo lock operates fine except unless you let the lever snap back lock dose not reset in locked position, in other words if you slowly let the lever return after opening lock stays unlocked I have 3 locks like that I can't figure it must be the combo box return spring right

"If your lock is opening on every turn of the knob or lever, except upon entering a code, this may be a ZERO CODE. Before attempting to remove the lock from the door, refer to the troubleshooting procedures outlined at bottom of this document for a zero code symptom/solution

Solution: Follow the procedure for changing a combination except omit step 3 (do not enter
the existing combination)."

I excerpted the above from the full instructions on how to change the code. If you don't have them, got to this link:

http://www.kaba-ilco.com/access_control/literature/literature_grid_mechanical_pushbutton_locks.aspx?id=13

and go across from L1000 to the last column, "Tips".
When you hover your mouse over PDF, two choices will appear; left click on the upper one, "Changing the code/..." to download it.
The download will be a PDF file format. If you are unable to open it, you will need to download and install Adobe Reader on your computer. There is a link (Get Adobe Reader) at the top right of the literature grid.
When you do get the download open, you will have the stepwise procedure and illustrations necessary-but don't forget to omit Step 3, if you believe that you have the ZERO code problem!

Good luck--and please provide feedback if this helps!

Contact Kaba Ilco for technical assistance:
Tech Support from this link:
http://www.kaba-ilco.com/access_control/support_contacts/technical_support.aspx


Good luck!

I found this instruction elsewhere on this site ( thanks to pctuneup191):

PROCEDURES TO CHANGE THE COMBINATION OF SIMPLEX 1000 SERIES CIPHER LOCKS


1.) ENSURE THE DOOR IS OPEN.


2.) INSERT THE DF-59 CONTROL KEY INTO THE COMBINATION CHANGE PLUG ASSEMBLY (ON THE BACK OF THE

DOOR) AND UNSCREW THE CYLINDER BY TURNING THE KEY COUNTERCLOCKWISE.


3.) TAKE THE CHANGE PLUG ASSEMBLY COMPLETELY OUT OF THE DOOR.


4.) TURN THE OUTSIDE DOOR KNOB CLOCKWISE ALL THE WAY UNTIL IT STOPS, THEN RELEASE THE KNOB.


5.) PRESS IN THE EXISTING COMBINATION FIRMLY.


6.) INSERT THE SPANNER WRENCH IN THE COMBINATION CHANGE SLEEVE. IT SHOULD INSERT AT THE NINE

O'CLOCK POSITION.


7.) TURN THE SPANNER WRENCH GENTLY CLOCKWISE UNTIL IT STOPS AT THE 12 O'CLOCK POSITION. NOTE

THE NOTCHES IN THE COMBINATION CHANGE SLEEVE MOVES AS THE SLEEVE IS MOVED.


8.) TURN THE SPANNER WRENCH COUNTERCLOCKWISE BACK TO THE NINE O'CLOCK POSITION UNTIL IT STOPS.

REMOVE THE SPANNER WRENCH.


9.) TURN THE OUTSIDE DOOR KNOB CLOCKWISE (ALL THE WAY, UNTIL IT STOPS), THEN RELEASE.


10.) INSERT THE NEW COMBINATION BY PRESSING IN THE BUTTONS. USE AT LEAST three numbers and a

maximum of five.


11.) TURN THE DOOR KNOB CLOCKWISE ONCE, ALL THE WAY, UNTIL IT STOPS. HOLD IN THIS POSITION AND

CHECK IF THE LATCH IS RETRACTED.


12.) RELEASE THE DOOR KNOB.


13.) TURN THE DOOR KNOB CLOCKWISE ONE MORE TIME TO THE STOP POSITION. AT THIS POINT, THE LATCH

SHOULD NOT RETRACT UNLESS YOU USE THE NEW COMBINATION.


14.) REINSERT THE CYLINDER INTO THE BACK OF THE DOOR BY SCREWING IT IN CLOCKWISE WITH THE DF-59

CONTROL KEY (DO NOT OVERTIGHTEN!)


REMOVE THE KEY.

A Df-59 key can be purchased at this site:

http://absupply.net/kaba-access-control-lock-1000-series-key-df59.aspx

The spanner wrench (SMPBC201278 Simplex:SpannerWrench $9.00) referred to can be purchased from this site:
http://www.ckilock.com/Mpage18.asp

You will find a link to download the manual for your model on this page:

http://www.kaba-ilco.com/access_control/literature/literature_grid_mechanical_pushbutton_locks.aspx?id=13

These are PDF files, requiring Adobe Reader to open. There is a link on the same page to download Adobe reader.

Customer service can be contacted from this link:

http://www.kaba-ilco.com/access_control/support_contacts/service_and_support.aspx

Tech Support from this link:
http://www.kaba-ilco.com/access_control/support_contacts/technical_support.aspx

Good luck!

Navigate to this page, which is a grid of the various models of Kaba locks, and select the installation instruction download for your L1000 locks:

http://www.kaba-ilco.com/access_control/literature/literature_grid_mechanical_pushbutton_locks.aspx?id=13&obj=1000

The download will be a PDF file, which requires Adobe Reader or similar program to view the file. If you don't have it installed, there is a link to Adobe Reader at the top of the grid chart.

When you have the "Manual" downloaded and opened, scroll down to "Troubleshooting" page 40 of 44, where it states

Outside lever when turned always retracts latch without depressing any buttons.

Lock is in zero combination.

Follow the procedure for changing a
combination except omit step 3 (do not enter the existing combination)

This sounds like the solution to the problem you are describing. Good luck!

I can't help you directly, but I can steer you to their Tech service:
Tech Support from this link:
http://www.kaba-ilco.com/access_control/support_contacts/technical_support.aspx

And Customer Service from this link:
http://www.kaba-ilco.com/access_control/support_contacts/service_and_support.aspx

Manuals from this site:
http://www.kaba-ilco.com/access_control/literature/literature_grid_mechanical_pushbutton_locks.aspx?id=13

These are PDF files, requiring Adobe Reader to open. There is a link on the same page to download Adobe reader.

Good luck!

If you take that simplex 1000 and shove it straight up your *** I dont trhink anyone will be putting magnets near it except for steve o

call a locksmith hero !

If the handle has been forced their is a part inside that is broken and it appears as if the handle is loose. I have priced the replacement parts and they were over 75% of  what I could purchase the whole thing for ,so I elected to purchase new and go with the direct replacment model L1000 (Lever) to make it ADA compliant at the same time.  

I'm trying to remove a unican lock from my door but I can't see how to get the handle off. any suggestions?