Yamaha Motor Manufacturing Corporation will end side-by-side production at its Newnan plant, affecting about 100 full-time positions as the company restructures the facility around other product lines. Yamaha officials stressed that the Newnan plant is not closing and that the company is not leaving Coweta County. Some of the employees affected in Newnan currently work on the side-by-side production line. Side-by-side production began at the Newnan plant in September 2002. She said Yamaha wanted local residents to understand that the reduction in jobs and end of side-by-side production do not signal a departure from Newnan.