Suzuki - 4-Stroke Service Manual - DF115B / DF140B (2021 & Newer) - 99500-99L00-01E. Use this original Suzuki service manual to service applicable 4-stroke Suzuki outboard engine models. A comprehensive companion for any engine rebuild or maintenance task, this service manual includes engine specifications and step-by-step service procedures. Applies to the following Suzuki 4-stroke outboard models: DF 115B - 2021 & Newer DF 140B - 2021 & Newer