Abstract: Lean Six Sigma is a tool that can reduce muda (waste) during the manufacturing process. Lean Six Sigma is an integration of Six Sigma and Lean Manufacturing, both quality improvement techniques. Lean and Six Sigma are highly complementary and Six Sigma provides an integrated improvement approach that increases quality by reducing variation, defects, and costs. Lean adds tools that increases process throughput by eliminating waste. There are 7 types of waste that occurs during the production systems such as delay, conveyance, over processing, correction, conveyance so on and Delays occurs in the day to day process during manufacturing. But in process terms, delays are one of the biggest causes of ineffectiveness, inefficiencies, and poor performance. Hence, this paper mainly focus on various process methodologies that are used to reduce the delay in the manufacturing process in order to improve the productivity of the manufacturing systems.