What does the "LR" indicate in the 690LR model number? Wilson October 30, 2020 21:12 Updated The "LR" stands for lever release. Related articles What is the motor diameter of the Porter Cable 7815 router? Can I use hot water in my pressure washer? What is the process for sending an invention or idea to someone for consideration? What causes swirl marks? What can cause premature pad failure? Comments 0 comments Please sign in to leave a comment.