The mechanical parts of the Mr Beam II need to be cleaned and oiled approximately every 100 operating hours. You can find a counter of the operation hours in the Maintenance age of the Mr Beam software, under the settings menu, and additionally you will receive a notification when these 100 hours are done. 

Please follow this two easy steps to keep your Mr Beam II in the best shape:

1. Clean the mechanical guide of dust and dirt with a dry cloth.
2. Apply one or two drops of acid-free oil on both sides of the rod.

Done! Your Mr Beam II is ready to use. 

Happy lasering!