Winter flushing

[grady33]

I have twin Yam 225 EFI's. If I run my boat in below freezing weather and then flush it - do I need to pump anti-freeze into it from flushing hose line or from bottom? Boat is stored high on lift with engines usually down - although I sometimes have the engines up. With engines down or up, will all water drain from engine and pumps or is antifreeze required?

 

[Curmudgeon]

They'll probably drain if left down, probably won't if left up. Of concern, but not critical, is water pressure tubing. Don't know what to tell ya about those ...

 

[seasick]

The water will only drain if the motor is down. After it drains the motor can be left up if it is not exposed to rain or snow. So if it is indoors or covered ( including the prop) it can be drained down and then raised.
When raised, if rain or snow get into the prob hub, it wont drain out and will freeze if the temps get low enough.
Also after it drains, remove the flush hose and hold it down to get the residual water out. It can then be reconnected.

 

[NOTHING ELSE MATTERS]

On the Optimax i had i used to connect an air compressor in the water flush inlet and run 5-7 lbs PSI of air for all the water to come out.

 

[JUST-IN-TIME]

all outboards are self draining if in the fully trimmed down position only