How to Prevent Common Issues from Saltwater or Polluted Water Use Operating and storing your outboard in salt or polluted water can lead to long-term damage—but most problems are preventable with regular care. Follow these simple steps to protect your engine and extend its life: 1. Flush the Engine After Every Use After operating in salt or polluted water, always flush your outboard with fresh water. Refer to the Storage section of your owner’s manual for detailed instructions. We recommend using Honda Marine Salt Terminator for optimal results. Freshwater flushing helps prevent buildup that can clog or corrode water passages, sensors, and thermostats in the cooling system. 2. Rinse the Exterior Thoroughly Wash the outside of your outboard with fresh water after every use. Use Honda Marine Salt Terminator or a mild, biodegradable soap. Avoid spraying directly into the air intake. To maintain the finish, you may also apply a high-quality, non-abrasive wax. This helps prevent salt and contaminants from accumulating on the surface. 3. Tilt the Engine When Moored If your boat is moored in salt water, tilt the engine up so the gear case is completely out of the water. This prevents marine growth from damaging the gear case surface. 4. Store Away from Direct Sunlight Whenever possible, store your outboard in a shaded area. Prolonged exposure to the sun can deteriorate the finish and damage rubber components. If indoor storage isn’t an option, use a Honda Marine UV-resistant cover for protection. 5. Inspect and Touch Up Surface Damage Check your outboard for any nicks or scrapes regularly. Touch up any damaged areas promptly. Exposed metal can corrode quickly in salt or polluted water, and corrosion may spread beneath the paint if left untreated. 6. Apply Corrosion Inhibitor Monthly Use Honda Marine Corrosion Inhibitor on all internal surfaces under the engine cover and on exposed metal areas once a month. Avoid spraying on the timing belt, alternator belt, oxygen sensor, alternator, or anodes. This helps prevent corrosion caused by salt-laden air and moisture. 7. Lubricate Key Areas Regularly Apply Honda Marine Waterproof Grease to all recommended lubrication points monthly, as outlined in your owner's manual. Proper lubrication protects moving parts from saltwater intrusion and rust. 8. Service the Thermostat and Water Pump Annually Have your thermostat(s) and water pump checked and serviced once a year or every 200 hours of operation—whichever comes first. Salt and debris can shorten the lifespan of these essential components, so routine maintenance is key.