This comprehensive service and repair manual provides detailed instructions and high-quality diagrams for maintaining and repairing Mercury and Mariner 4, 5, and 6 horsepower, 4-stroke outboard motors. It covers a wide range of topics, including specifications, maintenance procedures, general information, outboard installation, electrical systems, ignition systems, charging and starting systems, timing, synchronization and adjustment, wiring diagrams, fuel systems, fuel pumps, carburetors, emissions systems, powerhead components, cylinder heads, cylinder blocks and crankcases, mid-sections, clamp and swivel brackets, drive shaft housings, lower units, attachments, control linkages, shift linkages, tiller handles, and manual starters. The manual also includes detailed color diagrams to further assist with understanding various components and systems. This manual is an invaluable resource for anyone who wants to perform their own repairs on their Mercury or Mariner outboard motor.

The Mercury Mariner 4HP, 5HP, and 6HP 4-Stroke Outboard Motors are compact and versatile powerplants designed for smaller boats, tenders, and inflatable craft. These lightweight and portable outboards provide dependable and fuel-efficient performance, making them a popular choice for recreational boating enthusiasts. Featuring a robust 4-stroke engine with an overhead cam design, these Mariners deliver smooth power delivery and quiet operation. The 4HP model boasts a displacement of 103cc, while the 5HP and 6HP models feature a larger 122cc displacement, providing increased power and torque. All three models come equipped with a built-in fuel tank and a manual start system, simplifying operation and maintenance. These Mariners are engineered for ease of use and durability. They feature a compact and lightweight design, facilitating easy transport and storage. The manual tilt system allows for convenient adjustments, while the corrosion-resistant construction ensures longevity in marine environments. The integrated fuel tank eliminates the need for external fuel sources, while the manual start system is reliable and simple to operate. Safety is paramount, and these outboards include a kill switch for immediate engine shutdown in case of emergency. These versatile and reliable outboards are a popular choice for a variety of recreational boating activities, providing a balance of performance, portability, and ease of use.