Outboard Flushing Dumb Question

[Yyjdennis]

I've attached a pic of the flushing connection on my new to me Honda 90 outboard. My understanding is that to flush the motor I unscrew this connection and attach a garden hose. Which side of the connection does the hose connect to, the rigid bit, or the hose?

Thanks,
Dennis

 

[Dave001]

I've attached a pic of the flushing connection on my new to me Honda 90 outboard. My understanding is that to flush the motor I unscrew this connection and attach a garden hose. Which side of the connection does the hose connect to, the rigid bit, or the hose?

Thanks,
Dennis

View attachment 121610

Hose

 

[leftcoast]

Don’t start the motor when flushing with that hose. Unless Honda is different you need to use muffs to flush when you want to start the motor.

 

[Ringo]

Buy the muffs from Walmart, Crappy tire or your local marine store, connect the hose to the muff and then put it around the water intake of the lower unit. Only start the engine when there's good water pressure. Tons of Youtube videos on this topic.

 

[Pineapple Express]

To flush with the Honda fittings connect the garden hose to the hose end on the motor. Don't run the motor.

To flush while running the motor either submerge the whole lower unit in a tub of water or use the clamp-on "muffs" as shown in @Ringo 's post above.

 

[trophywife]

my dumb question, how does the thermostat get correct flush without opening and closing without temps?

 

[scott craven]

my dumb question, how does the thermostat get correct flush without opening and closing without temps?

Those flush connections really only circulate water through the larger passages and do nothing for the thermostat. It's better than no flush at all I guess.

 

[CIVANO]

i was told by my yamaha dealer to hook a hose to the top flush hose with a saltaway dispenser set to water only and either put rabbit ears on the lower water intake or preferably put engine in stock tank covering lower intake. Turn water on BOTH locations and run until engine warms up. P indicator water gets warm. Then turn saltaway dispenser to saltaway setting and saltaway will clean all areas since thermostat is open. Run until saltaway in reservoir is gone and water there is clear.

 

[pescador]

Also, don’t put the hose on full pressure on the hose flush connection because you can cause a leak inside the motor if clips/hose clamps give out. Moderate pressure only. I read a story on THT where a guy caused serious damage to his motor.