How to Winterize an Outboard Motor | Winterizing a 2 stroke Outboard Motor | Boats.net

VIDEO HIGHLIGHTS:
Lower unit oil change - 1:05
Fuel system treatment - 3:00
Fogging the cylinders - 4:30
Using corrosion guard - 7:00

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In the video we’re working with a Mercury Tracker 25 outboard motor, but you may have similar steps for your Mercury outboard. If you’re not sure whether these steps apply to your motor, leave a comment and we’ll get back to you.

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[drwolfpoint]

Thanks for posting, I followed these instructions last winter for my 89 Johnson and sure enough it started right up the first time in the spring.

[JAKCAL]

Excellent video, my ‘89 Evinrude 120 started first pull this year thanks to you! Following these same instructions again today for this winter

[debbrock]

Thank you so much. your clear and simple manner communicates throughly.

[ngirardo]

There’s no leftover water inside the motor anywhere from running it that will freeze in cold temps??

[WanderingSeneca]

What about any water left in the lower (pump, etc) or in the block, if you live in an area where it freezes?

[davidmoore]

This guy is great I wish i could get schooled on this stuff by him

[gregturner]

Thanks so much makes it look so easy !

[patrickmowatt]

I would have pulled that prop off (and maybe refinished or replaced it) and checked the prop shaft seal for fishing line. Water got into that gearcase somehow.

[IgooseI]

So if I’m going out in the winter do I need to winterize my outboard? I’m going hunting with it throughout the winter and it would be stored periodically

[Siwashable]

Hey there, great video. I don't have muffs - can I just use a barrel with water ti run the engine while I am fogging it? Thanks!

[chriscoote]

Shouldn’t you use new rubber washers on the gear lube screws?

[Elon_Trump]

I need those frames you have. magnetic in the middle of the eyepiece, I love it.

[dmwi]

Coolant system:
Biodegradable RV Antifreeze.
Run engine on flushette (muffs) with garden hose connected to water until warm and thermostat is open.
Then disconnect water and allow engine and drive to drain.
Then, while engine is still warm, pour RV antifreeze into flushette. Run engine until you see RV antifreeze come out the exhaust.
You will need a funnel, clear hose is best, old garden hose piece will work and male hose fitting to attach to flushette.
Some will put hose in jug of RV antifreeze and allow pump to suck it up. But if your engine is larger, or an I/O it may use more than one gallon.
Do not drain RV antifreeze.
This forces remaining water out, dilutes any remaining water, and helps with corrosion prevention.

[nicholasphillips]

What about the coolant ports? This is my first winter so im trying to figure it all out. I read that you need to flush the coolant with 100% antifreeze to get any remaining water out.

[miztrusa]

I jus picked up an 88 Mercury Mariner 5M and I have a Mercury Force 75 both 2 gear lubes and other products for both?

[Tal_Aldris]

Never winterized an outboard before and I’m in Canada so very cold winter! Thanks for this video! Just one question, what about the oil fuel that’s in the outboard?

[migratorygame]

What about water in the motor? Or is that something i dont have to worry about on an outboard.

[johnjosjohnjos]

Would sea foam spray work as a fogging spray?

[robertthompson]

Sprayng fogging oil into the throat of the carburetor will NOT put it into the jets in the carb.

[paun]

First year boat owner, and am going to winterize now. I have a 1982 25 hp Evinrude. I assume I need to hook water up while it’s running to get the treated gas through the system so nothing burns up. With that being said and if that’s the case, would it be better to replace the lower unit gear oil after the motor is finished running and I have fogged the motor? I say this incase while the motor is running, I don’t want to take a chance of water ending up in my fresh gear oil.