This comprehensive Mercury Mariner 65 75 80 90 100 115 125 MARATHON Service and Repair Manual is your ultimate guide to maintaining and repairing these powerful outboard motors. Inside, you'll find detailed information on every aspect of these engines, from basic maintenance procedures to complex troubleshooting and repair steps. This manual is designed to help you keep your engine in top condition and extend its lifespan, saving you time and money in the long run. The manual covers everything you need, including: - **Essential information:** Get started with important safety guidelines, general information, and specifications for your Mercury Mariner outboard motor. - **Maintenance:** Learn about regular maintenance procedures, including oil changes, filter replacements, and other essential steps to keep your engine running smoothly. - **Outboard installation:** Understand the correct installation techniques for your Mariner outboard, ensuring proper setup and integration with your boat. - **Electrical systems:** Dive into the electrical system, including ignition, charging and starting systems, and wiring diagrams. - **Fuel system:** Gain detailed knowledge on the fuel system, covering fuel pumps, carburetors, and oil injection. - **Emissions:** Learn about emissions control systems and how to maintain them. - **Powerhead:** Explore the powerhead section, covering disassembly, rebuild, and troubleshooting procedures. - **Mid-section:** Understand the mid-section, including clamp/swivel brackets and drive shaft housing. - **Power trim:** Learn about power trim systems, including both earlier and later models, for proper operation and troubleshooting. - **Shock absorber:** Understand the shock absorber system and how to maintain it. - **Manual tilt:** Learn about the manual tilt system and how to operate and maintain it. - **Lower unit:** Explore the lower unit, covering disassembly, rebuild, and troubleshooting procedures. - **Jet drive:** Find information on jet drive systems for models equipped with them. - **Attachments and control linkage:** Learn about attachments and control linkage systems, including throttle/shift linkage. - **Tiller handle:** Understand the tiller handle system and how to maintain it. - **Manual starter:** Learn about the manual starter system and how to operate and maintain it. This manual is your essential reference for understanding and repairing your Mercury Mariner outboard motor. With its detailed information and step-by-step instructions, you'll be equipped to handle any maintenance or repair task with confidence.

The Mercury Mariner 65, 75, 80, 90, 100, 115, and 125 MARATHON Outboard Motors are a family of powerful and reliable engines designed for a wide range of boating applications. These outboards boast a robust and durable construction, featuring a cast-iron powerhead, a durable lower unit, and a robust crankshaft. They are designed for dependable performance, making them suitable for fishing, cruising, and watersports. The Mariner engines are known for their smooth operation, quiet performance, and impressive fuel efficiency, making them a popular choice among boat owners. The MARATHON series of engines emphasizes reliability and long-lasting performance. These motors are known for their exceptional durability, even under challenging conditions. The MARATHON designation denotes a specific build quality and component selection aimed at enhanced longevity and lower maintenance requirements. They feature durable components, such as a heavy-duty gearcase and a robust crankshaft, designed to withstand the rigors of frequent use and demanding applications. The Mercury Mariner MARATHON series emphasizes ease of operation and maintenance, offering features like a simple and accessible control system and a convenient access point for servicing. These engines are engineered to provide dependable power and low-maintenance operation, making them a trusted choice for a variety of boating needs.