Homework (SOS!) (Title: ) Single cylinder four-stroke internal combustion engine construction analysis based on the principles of mass production The purpose of my essay is the analysis of the single cylinder four-stroke internal combustion engine based on the principles of mass production. These days mass production took over the leading role in production. Its important keystones, such as Lean or 5S method can not be ignored. In my analysis I used the reverse engineering process, and with its help, I could tell the order of assembly. Then, the MTM UAS methodology helped me in finding out the installation time at each workstation. Thanks to time analysis, critical movements and processes can be observed and by eliminating these, production numbers can be improved. With the help of time analysis, configuration of workstation can be also optimized. Then I summarized the results and experiences and I made some suggestion for improvement.