I am looking at a TG that on the starboard side in the engine compartment there are two hose connections. I imagine one for each engine. If you were to flush the engines, or start the motors while on the trailer, you would connect a hose to each of the connectors?
What all do I need to know about this? What kind of hose pressure, things to be careful of, do, etc. Thanks.

Here is my routine (I am salt water guy, so I use a product called "Salt-Away"):

Hook Hose up to Salt-Away dispenser as available at Boater's World/West Marine. This dispenser has a 3 way valve on it for rinse mode, off, and Salt-Away Soap Dispense.

I then hook the dispenser and hose up to the Starboard engine flush being sure to support the hose in a manner that it won't kink or inhibit water flow.

Let Water flow full power for a couple minutes so that is back-flows out of the outdrives.

Fire up the engines and allow to run on "rinse" (no salt away soap) for a couple minutes.

I then Cut the Salt-Away dispenser to "Soap" and then immediately turn on the Silent Choice Mufflers for about 45 seconds allowing some soap to flow down that route.

After about 45 seconds the Silent Choice comes off and the engine is then soaped with salt-away. After I see soap coming out of the mufflers for about 30 seconds I turn off the engines, turn the dispenser to off, and then do the other side.

When everything is done with the engines I then THOROUGHLY spray down the drives with water, adn then spray them and leave them coated with Salt-Away.

I also spend a fair amount of time flushing the trailer as well....what a pain.

These are fresh water flush connections. You are correct, one for each motor. Hook a hose up to it, start the flow and crank the motor. I wouldn't suggest reving the engine too high but this should be used for routine maintenance. Also good to use if you're winterizing not to mention during those times where you need to test all your new motor work.

Some times the motor will suck the hose flat if it doesn't flow enough. Only idle motor. Don't walk away while flushing. Keep kids away from back of boat. Always check for water out exhaust when you start an engine. Plus of course what the others said.
Jim

Excellent, thanks for the info guys!

On all the Cigs I have owned there was also a shut-off valve so the water-pick up from the Ocean were shut off and could not contaminate if you were doing this while in salt water Basically letting you flush even when staying in salt water, we use it a lot in Florida.

Gotcha, thanks for that. I am in Missouri and this is a freshwater boat. It will never see salt water. I am just looking to safely be able to start the motors while on its trailer for tuning purposes.

I have the same set up on my TG...and I am a firm believer in "salt Away". I always make sure to warm the engines up to operating temp before I flush them to make sure the T.stats are open. Am I correct that if you flush a cold engine with a closed T.stat, then all of your flush water goes straight out the exhaust without going thru the engine??