Door User Manual
MASTER LOCK PRODUCT SPECIFICATIONS  FEBRUARY 2011  
Master Lock Company, 137 West Forest Hill Avenue, P.O. Box 100367, Oak Creek, Wisconsin 53154 
TELEPHONE:  800-308-9244;  FAX:  800-308-9245;  WEBSITE:  www.masterlock.com 
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BUILT-IN COMBINATION LOCKS  10 51 61 - 9 
ADA Compliant Locks:   
ADA Compliant locks offer Three-Way-To-Open Operation 
These locks meet the Department of Justice (DOJ) ADA Standards for Accessible 
Design (ADA Standards) and ICC/ANSI A117.1:  Operation of the lock shall not 
require tight grasping, pinching, or twisting of the wrist.  The force required to 
operate component shall be 5 pounds maximum.   
ADA Standards for Accessible Design; per Chapter 2, Article 2.25 –  Storage; 
requirers providing a minimum of 5 percent ADA Accessible lockers (minimum of 
1) 
Master Lock recommends only ordering ADA compliant locks to meet the 5 
percent minimum ADA Standard, with the remainder of the locks ordered as 
standard locks.  
  Model 1651MKADA:  Left-handed with plastic dial. 
  Model 1656MKADA:  Right-handed with plastic dial. 
  Model 1651MKMDADA:  Left-handed with metal dial (MD). 
  Model 1656MKMDADA:  Right-handed with metal dial (MD). 
Edit the following to reflect required model.  *****  
    A.  General:   
      1.  Description:  Built-in combination lock with steel body for single point 
horizontal latch lockers.  
      2.  Operation:  Lock provides high security by using an extra long locking bolt 
without dead bolt locking. Lock uses slam shut operation. 
      3.  Mounting:  Concealed in [right] [and] [left] handed locker door. 
    B.  Standard lock:   
      1.  Lock Description:  3 digit combination and 5 preset combination changes with 
5 pin tumbler lock cylinder for access using control key. 
      2.  Model:  [1652] [1653] [1652MD] [1653MD]  










