This comprehensive service manual provides detailed instructions and technical specifications for maintaining and repairing MERCURY MARINER 90 HP outboard motors manufactured in 1996 with serial numbers 0G301751 and above. The manual covers a wide range of topics, including:

* **General Information:** Covers important safety precautions, troubleshooting tips, and basic engine operation.
* **Engine Disassembly and Assembly:** Provides step-by-step instructions for dismantling and reassembling the engine, including detailed diagrams and illustrations.
* **Lubrication and Cooling Systems:** Covers the maintenance and repair of the engine's lubrication and cooling systems, including oil changes, filter replacement, and cooling system checks.
* **Fuel and Ignition Systems:** Includes procedures for servicing the fuel system, adjusting carburetor settings, and troubleshooting ignition problems.
* **Electrical System:** Offers instructions for inspecting and repairing the engine's electrical system, including wiring diagrams, component testing, and troubleshooting.
* **Propeller and Steering Systems:** Covers the maintenance and repair of the propeller and steering systems, including propeller shaft alignment and steering cable adjustments.
* **Troubleshooting Guide:** Provides a comprehensive troubleshooting guide for identifying and resolving common engine problems.
* **Specifications and Diagrams:** Includes detailed engine specifications, wiring diagrams, and component illustrations for easy reference.

This manual is an essential resource for mechanics, technicians, and boat owners who need to perform maintenance or repair on their MERCURY MARINER 90 HP outboard motor. The detailed instructions and illustrations make it easy to understand and follow, ensuring successful repairs and proper engine operation.

## The Mercury Mariner 90 HP: A Reliable Workhorse for the Water

The Mercury Mariner 90 HP, produced from 1996 onwards with serial numbers starting at 0G301751 and above, represents a robust and reliable outboard motor ideal for a variety of boating applications. This 2-stroke engine, boasting a displacement of 1494cc, is known for its impressive power output, delivering a smooth and responsive performance. Its 90 horsepower capability allows for efficient cruising, towing, and fishing, making it a popular choice for both recreational and professional boaters.

The Mariner 90 HP stands out for its durable construction and user-friendly features. The engine is built with high-quality materials and incorporates a well-engineered design, ensuring long-lasting performance and minimal maintenance needs. Its compact size and lightweight design make it easy to install and maneuver, while its intuitive controls and accessible service points facilitate convenient operation and maintenance. The Mariner 90 HP also features a robust cooling system, ensuring optimal operating temperatures even under heavy loads. Whether cruising tranquil waters or tackling challenging fishing expeditions, the Mariner 90 HP offers the power, reliability, and user-friendliness necessary to enhance your boating experience.