Tips For Flushing an Outboard Motor

Regular cleaning and maintenance include flushing your outboard motor with fresh water after every use in saltwater. This is done to prevent the build-up of salt residue and scale in the engine's cooling passages. Visit us at New Jersey Outboards in Bayville, New Jersey, your number one source for outboard motors and boating accessories! We welcome customers from Philadelphia, Pennsylvania, New York, and Connecticut, too!

Read and Follow the Directions

Make sure you have and read the instructions for flushing your motor in your owner's manual. The instructions for outboard motor flushing can vary. If you cannot find your owner's manual, you can probably search online for a digital copy, or we can order a paper copy at New Jersey Outboards. Follow these directions completely. If not, you could chance damaging parts of the motor. 

Outboard Motor Flushing Tips

1. Always have a water supply when starting the motor. The water lubricates the parts of the water pump impeller, so you need to have it submerged in water or a hose running water through it. If you run the motor without water, even for a short time, you could damage or destroy the impeller.
2. Follow the specific instructions from your owner's manual. As noted, the instructions for each brand or model can vary, and don't risk damaging your motor.
3. Use the built-in flush connection if you have one. A built-in flush connection makes things easier, and most newer outboard motors have one to connect a garden hose to.
4. The second way is to use flush muffs. Ensure the muffs fit over the cooling water intake areas. Flush muffs look like earmuffs. Connect one to a garden hose and turn the hose on. The motor must be set to idle to prevent the propeller from turning. You should see water flowing out of the "tell-tale," which indicates that water is pumping through the motor. Let it run for about 10 minutes. If the muffs fall off or are not sealed correctly, you could end up damaging the impeller. Finally, turn off the motor before turning off the water. 
5. Use a flushing bucket or bag with a garden hose attached. All inlets should be covered with water in the bag or bucket with a connector for the hose. Most flushing bags or buckets require removing the propeller. 
6. Afterwards, ensure all the water is drained from the motor.

Your outboard motor should be flushed after each trip in saltwater. This prevents residue build-up from getting into and damaging the engine. Feel free to stop by New Jersey Outboards in Bayville, New Jersey, for more information on flushing your outboard. If you're coming from Philadelphia, Pennsylvania, New York, or Connecticut, visit us as well!