1990 Yamaha 4 LD Outboard service repair maintenance manual. Factory Service Manual

The 1990 Yamaha 4LD Outboards manual presents procedures in a step-by-step format, compiled to provide mechanics with a comprehensive explanation of all disassembly, repair, assembly, and inspection operations. Each chapter includes exploded diagrams before each disassembly section for ease in identifying the correct procedures. The manual is completely bookmarked and searchable, making it a handy reference for both professional mechanics and DIY enthusiasts. It covers everything about the motor.