Twin Screws Marine Service performs Marine Diesel Service, scheduled maintenance (100/300/750/1000 hour / annual service) Repairs and Installations on all makes and models of Diesel and Gas Engines. Our Marine Diesel technicians are certified in all major diesel and gas manufacturers including Caterpillar, YanMar, Volvo Penta, MAN, Detroit Diesel, and many more. For your convenience, we will perform marine diesel service & repair dockside, at your marina or at our service center located in South Ft Myers, conveniently located just off US 41, close to I-75. For those suffering fuel quality issues, our Fuel Polishing & Removal service will get you back underway quickly. Contact us to schedule your diesel service or repair.