Mercury - D1.7 mi om swedis - 90-865237K30. The Mercury D1.7 mi om swedis - 90-865237K30 is an official operation and maintenance manual designed specifically for Mercury's D1.7 marine diesel engines. This comprehensive guide is an essential tool for owners, technicians, and service professionals who need accurate, detailed information on maintaining and operating these high-performance engines.. Key Features. OEM-Certified Manual - Created by Mercury Marine for precise, engine-specific guidance