525EFI Winterization
 

About to winterize here and what exactly do I not have to winterize the 525 with the closed cooling. I want to be able to do this myself and not have to get a new motor in the Spring :D
Thanks Jim

Re: 525EFI Winterization
 

All you need to worry about, is getting the
water out of the inlet/sea pump, cooler circuit.

I have a 5 gallon bucket with a hose
coming out of the bottom.

Set the bucket on the swim platform.

I connect this hose to a flushing attachment,
dump anti freeze in the bucket, start the
engine, run it 'til the anti freeze comes out the
exhaust. ( you've displaced all the water in the
inlet circuit)

I spray fogging oil down the intake during this
proceedure also.

Takes about 5 minutes.

Re: 525EFI Winterization
 

DO NOT SPRAY FOGGING OIL IN THE THROTTLE BODY!!

Read the manual.
You will gum up the air flow sensors. You can do this on a carb, not with EFI.

Proper procedure is upon your just prior to your final running of the engine, when you are pumping in your antifreeze...

...remove your Fuel/Water Seperator, dump out half the fuel, and fill the rest of the way with 2-Stoke (Mercury Outboard) Oil. There is lots of info here on OSO.