How can the W571 lock be converted to the W501 lock?

The difference between the W501 and the W571 is the restoring/non-restoring feature of the latch.  Adding the restoring latch to the W501 makes it a W571.  Adding the non-restoring latch to the W571 makes it a W501.  

 

Here are the standard latch faceplate part numbers:

  • For non-restoring (W501) use latch part number Q330-197
  • For restoring (W571) use latch part number Q330-194

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