Suzuki - 4-Stroke Service Manual - DF300B/DF350A - 99500-98L10-01E. 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 300B All Model Years DF 350A All Model Years