In recent years, manufacturing SMEs have been of great importance for the Peruvian economy, representing 29.60% of the national GDP; however, a large percentage of these companies report various problems in their processes, since they do not have adequate management to carry out their activities. In relation to the above, an example of this is the unproductive times generated by unplanned stops that impact the productivity levels of a textile company based in southern Lima, so this research was implemented lean manufacturing tools such as 5S and SMED, with which it was possible to increase the ratio by 18.06%, also, the arena software was used in the process to simulate scenarios with the reduction of unproductive times structured through the proposed improvement of the Deming Cycle (PDCA).

Keywords
5S, SMED, Lean Manufacturing, Productivity, Textile, SMEs