Mercury Marine Outboard Care How-To

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Mercury Marine Outboard Care How-To

Your Guide to Longer Mercury Motor Life

Ensuring the longevity of your Mercury outboard, especially in the popular 2.5-25 HP range, requires regular care. These motors, known for their reliability and efficiency, need routine maintenance to maintain peak performance.  

 

We’ll guide you through the essential steps: freshwater flush, changing the engine oil, replacing the fuel filter, and changing the gear lube.

Mercury Freshwater Flush

A freshwater flush is crucial after every outing, especially if you’ve been in saltwater. Start by connecting a garden hose to the motor’s flush attachment. Turn on the water (but not the engine) and let it run for at least 10 minutes. This process helps remove salt, sand, and other debris, preventing corrosion and blockages. 

Change Engine Oil

Regular oil changes are vital for your motor’s health. For most Mercury models, it’s recommended every 100 hours of use or once a year, whichever comes first. Warm up the engine first, then turn it off and drain the oil. Replace the oil filter and refill it with high-quality marine engine oil. Always check your owner’s manual for the specific oil type and capacity. 

Change Fuel Filter

A clean fuel filter ensures your engine runs smoothly. Replace the fuel filter annually or more often if you notice any fuel flow problems. Shut off the fuel supply, remove the old filter, install a new one, and ensure all connections are secure. Remember, a clogged filter can lead to engine problems. 

Change Gear Lube

Change the gear lube every 100 hours of operation or at least once a season. Drain the old lube and check for any metallic particles or water, which could indicate bigger issues. Refill with the recommended type of marine gear lube, ensuring you don’t overfill. 

Have questions about your Mercury motor? We’re here to help! Contact us for more tips or if you need assistance with your outboard maintenance. 

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