Running engine to flush water for Spring freezes

[bobholthaus]

I live in Missouri and I “un-winterized” my 2020 242SE last weekend on our first ride of the season. Tonight, it’s getting to 28°. The dealer told me I could run my engines for 6-8 seconds per engine while on my hoist to blow any water out, so that the cold temps wouldn’t hurt anything. Is this correct? Thanks.

 

[HangOutdoors]

Start your engine not on the hose. Rev it a couple of times then shut off. I usually Rev mine up to circa 3000 RPM's briefly to blow out the water. Quick Rev up and down. Then shut off.

 

[Whisky]

Yup, we do the same in the shoulder seasons, start, rev once or twice, off she goes.

 

[bobholthaus]

Thank you guys.

 

[biffdotorg]

Ironic, we pulled our pair of GP1300R's out on Sunday and got a quick rip in before the snow hit again in the afternoon. I use the same procedure on all our Yamaha's as listed above and have great luck with Yamaha jets since 1997.

That being said, upon initial fire up of one of the GP's, it blew out a fair amount of water. And this was sitting in -30f for a number of weeks. So my point being, the engines will drain with this procedure, but it may not blow out the entire water box.

This is not an issue, as the water box has plenty of room for ice expansion. And honestly, at 28 degrees, ice will never form hard enough to cause damage either. So you are good to go with the advice given above.