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Mercury Outboard Service Library

For Verado L6 Models, 200 - 400 HP

Oil Change (1)

Engine Filters (3)

Cooling System (2)

Lower Unit (3)
Corrosion Prevention (2)
Engine Belt (1)

How to Perform an Engine Oil Change

Mercury outboard oil changes are a critical internal maintenance task that should be performed minimally annually or after every 100 hours of outboard motor operation.
Blog-Oil-Change

How to Change an In-Line Fuel Filter

The in-line fuel filter plays a vital role in maintaining the engine’s performance. It prevents contaminants from entering the fuel system. Following these step-by-step instructions, you can replace the fuel filter efficiently and ensure your Mercury outboard continues running smoothly.
Blog-In-Line-Fuel-Filter

How to Change a Fuel Water Separator Filter

Regular maintenance is crucial if you own a Mercury Verado outboard engine and want to ensure optimal performance. One important aspect of engine maintenance is changing the fuel water separator. Regularly replacing this vital component can prevent potential damage caused by water and contaminants and ensure your engine runs smoothly and efficiently.
Blog-Fuel-Water-Filter

How to Change an Air Filter

Whether preparing for the boating season or troubleshooting a performance issue, changing the air filter is a vital but simple task you can accomplish on your own. With just a few simple steps, you can keep your Mercury outboard running smoothly and enjoy your time on the water with peace of mind.
Library-Air-Filter-Hero

How to Change a Thermostat

Does your Mercury Verado need a new thermostat? This critical question should be answered as part of 100-hour, 300-hour, and other interval service or if your engine is not performing up to par.
Blog-Thermostats

How to Remove & Reinstall an Impeller

Over time, wear and tear can reduce the impeller’s effectiveness, leading to overheating problems that could severely damage your engine. Therefore, knowing how to change a Mercury outboard water pump impeller is essential for boat owners and enthusiasts.

This is a step-by-step guide to help you confidently replace the water pump impeller.
Library-Impeller-Hero

How to Change Gear Lube

Gear lube is crucial in maintaining your Mercury outboard engine’s smooth operation and longevity. Regularly changing gear lube helps ensure optimal performance and protects the internal components from excessive wear. This step-by-step guide will walk you through changing the gear lube in your engine.
Library-Gear-Lube

How to Replace an Outboard Propeller

This guide will walk you through removing and reinstalling a Mercury outboard propeller. While this guide focuses on common Mercury models 70hp+, and the demonstration video features a Mercury Verado 300, the propeller removal and reinstallation process is similar across many different outboard motors.
Blog-Propeller

How to Remove the Lower Unit

The lower unit of a Mercury outboard motor plays a crucial role in transferring power from the engine to the propeller, ensuring smooth and efficient operation on the water. There are instances when removing the Mercury outboard lower unit becomes necessary for maintenance, repairs, or upgrading.
Library-Lower-Unit-Hero

How to Protect an Outboard from Salt-Induced Corrosion

For boat owners, thinking about how to prevent saltwater corrosion, an issue that can cause significant damage, is a persistent thought. Thankfully, this enemy is not invincible. With anti-corrosion sprays, you can effectively safeguard your prized outboard.
Blog-Corrosion-Prevention-Library-Callout

How to Change External Anodes

One vital aspect of proper maintenance is ensuring that the external anodes are regularly inspected and replaced when necessary. This guide will provide you with a step-by-step walkthrough of the process.
Library-Anodes-Hero

How to Change a Timing Belt

Maintaining the optimal performance of your Mercury Verado outboard engine requires periodic replacement of the timing belt. The timing belt plays a crucial role in synchronizing the engine’s internal components, and ensuring its proper functioning is essential to prevent potential damage.
Library-Timing-Belt-Hero

Oil Change (1)

How to Perform an Engine Oil Change

Mercury outboard oil changes are a critical internal maintenance task that should be performed minimally annually or after every 100 hours of outboard motor operation.
Blog-Oil-Change

Engine Filters (3)

How to Change an In-Line Fuel Filter

The in-line fuel filter plays a vital role in maintaining the engine’s performance. It prevents contaminants from entering the fuel system. Following these step-by-step instructions, you can replace the fuel filter efficiently and ensure your Mercury outboard continues running smoothly.
Blog-In-Line-Fuel-Filter

How to Change a Fuel Water Separator Filter

Regular maintenance is crucial if you own a Mercury Verado outboard engine and want to ensure optimal performance. One important aspect of engine maintenance is changing the fuel water separator. Regularly replacing this vital component can prevent potential damage caused by water and contaminants and ensure your engine runs smoothly and efficiently.
Blog-Fuel-Water-Filter

How to Change an Air Filter

Whether preparing for the boating season or troubleshooting a performance issue, changing the air filter is a vital but simple task you can accomplish on your own. With just a few simple steps, you can keep your Mercury outboard running smoothly and enjoy your time on the water with peace of mind.
Library-Air-Filter-Hero

Cooling System (2)

How to Change a Thermostat

Does your Mercury Verado need a new thermostat? This critical question should be answered as part of 100-hour, 300-hour, and other interval service or if your engine is not performing up to par.
Blog-Thermostats

How to Remove & Reinstall an Impeller

Over time, wear and tear can reduce the impeller’s effectiveness, leading to overheating problems that could severely damage your engine. Therefore, knowing how to change a Mercury outboard water pump impeller is essential for boat owners and enthusiasts.

This is a step-by-step guide to help you confidently replace the water pump impeller.
Library-Impeller-Hero

Lower Unit (3)

How to Change Gear Lube

Gear lube is crucial in maintaining your Mercury outboard engine’s smooth operation and longevity. Regularly changing gear lube helps ensure optimal performance and protects the internal components from excessive wear. This step-by-step guide will walk you through changing the gear lube in your engine.
Library-Gear-Lube

How to Replace an Outboard Propeller

This guide will walk you through removing and reinstalling a Mercury outboard propeller. While this guide focuses on common Mercury models 70hp+, and the demonstration video features a Mercury Verado 300, the propeller removal and reinstallation process is similar across many different outboard motors.
Blog-Propeller

How to Remove the Lower Unit

The lower unit of a Mercury outboard motor plays a crucial role in transferring power from the engine to the propeller, ensuring smooth and efficient operation on the water. There are instances when removing the Mercury outboard lower unit becomes necessary for maintenance, repairs, or upgrading.
Library-Lower-Unit-Hero

Corrosion Prevention (2)

How to Protect an Outboard from Salt-Induced Corrosion

For boat owners, thinking about how to prevent saltwater corrosion, an issue that can cause significant damage, is a persistent thought. Thankfully, this enemy is not invincible. With anti-corrosion sprays, you can effectively safeguard your prized outboard.
Blog-Corrosion-Prevention-Library-Callout

How to Change External Anodes

One vital aspect of proper maintenance is ensuring that the external anodes are regularly inspected and replaced when necessary. This guide will provide you with a step-by-step walkthrough of the process.
Library-Anodes-Hero

Engine Belt (1)

How to Change a Timing Belt

Maintaining the optimal performance of your Mercury Verado outboard engine requires periodic replacement of the timing belt. The timing belt plays a crucial role in synchronizing the engine’s internal components, and ensuring its proper functioning is essential to prevent potential damage.
Library-Timing-Belt-Hero