Winoko, Y.A. and Setiawan, A. 2025. Effect of Rocker Arm Variation on the Perfonmance of a Single Cylinder Petrol Engine. International Journal of Marine Engineering Innovation and Research. 9, 3 (Jul. 2025), 568–573. DOI:https://doi.org/10.12962/j25481479.v9i3.4919.