Help: Winterize Johnson 50 hp 4 stroke motor

[Bigbobcat]

Hi,

Please help ! I would like to know how to winterize my Johnson 50 horse power 4 stroke motor. Please show me step by step with detail description ...

This is what I know so far, and I know I am missing something ...

- While the motor is still in the water
- Add the Stabil fuel stabilizer proportional to the gas inside the gas tank
- Run motor for 15 minutes
- While engine is still running after 15 minutes, open up the cover
- Then open up something (a black box) in the front of motor to fog the motor until it stalls. What kind of "fog" spray is it ? What brand is it ? Is it something like a can with a straw for me to spray ?
- Then I forgot what the next steps are

Please help ! Appreciate it !

 

[NelsonQ]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Fogging Oil. No specific brand, they're all the same. Any Marine or auto parts place will carry it.

Here's the steps to winterize.

Have fun.


http://forums.iboats.com/showthread.php?t=158078

 

[Bigbobcat]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Hi,
Thanks but I need more "specific" instruction specific to my Johnson 4 stroke 50 horse power motor as I am newbie to this winterizing stuff.
I did oil change myself for my car but I just need more help on this as it is the first time I will do it.
Please be detailed, thanks

 

[NelsonQ]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Ok, I'm not a 4 stroke guy but you'll need to change the oil in it.

The other parts are straight forward.

You've got the stabilizer down how to do that.

Next, fog the engine. Without know you're engine, I'm assuming its carbureted. the black box is an air intake manifold that fits over the top of the carburators (you should have 2 I believe).

(Again I may be wrong so a pic of it or details year/model would help a great deal. And if its not carbureted, this isn't the process)

Spray the fogging oil until it almost stalls into each carb.

Next at the bottom of your motor (lower unit) you'll see 2 screws on the right hand side I believe. Remove both and drain the lower unit oil. Check the color. If its dark/greenish, no problems or if clear like new oil. If its milky, you have water entering the lower unit and need to address the problem.

Next fill the lower unit with new oil from the bottom hole until it seeps out the top hole. Replace the gasket/rings on each of these plugs/screws and reinsert them.

The other link I provided will tell you other things like battery, etc you need to do.

If you're uncertain, change the impeller (as in the link) or have it serviced if more than a few years old. Also, install new plugs (now or in the spring but do it annually at least)

 

[NelsonQ]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Oh, and to make things easier in changing the lower unit oil, consider one of these little hand pumps. Great for getting it changed.

http://www.iboats.com/Lubrimatic_Lo...24623081--**********.543888213--view_id.47675

 

[Silvertip]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Whoa back on the fogging oil. A 50 Johnson 4-stroke is fuel injected, not carbureted. Spraying fogging oil can screw up sensors in the intake system. You have the fuel stabilizer part right. The next step is for you to buy a factory service manual for this engine. It happens to be the same as a Suzuki 50 HP 4-stroke and is a three cylinder engine. To replace the oil filter you need to remove the top cover and lower left side cover. You need a special oil filter wrench that fits this small size filter. The covers are plastic so watch what you are doing as you can easily damage them by improper installation. The oil drain plug is a silver plug with hex head on it that is visible on the left side of the engine below the filter. Install the new filter and add the correct amount of oil. Then remove the lower unit vent and drain plugs to drain the lower unit. Refill through the lower drain hole until lub oozes out the top vent hole. Insert the top plug first, then the bottom. Don't ask why the top hole first -- just do it. This engine uses coils directly over the spark plugs so there are no plug wires. If you are up to the task, remove the coils and plugs and spray the fogging oil into the cylinders and rotate the engine one or two revolutions to distribute the oil. But why bother. Cars are stores for far longer periods without fogging. Your 4-stroke can survive a six month layup without fogging.

 

[tashasdaddy]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Bigbobcat, my suggestion is that you purchase the Johnson service manual for your particular motor. it will give you the step by step procedure to do what you want, and the the dewinterizing steps. i you plan on working on your own motor, the manual will save you more money,, than the cost of the manual. buy it before you screw up your motor. see your J/E dealer for the OEM manual.

 

[NelsonQ]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Whoa back on the fogging oil. A 50 Johnson 4-stroke is fuel injected, not carbureted. Spraying fogging oil can screw up sensors in the intake system.

Please follow what Silvertip said. This is why I indicated if it isn't a carbureted engine, that the fogging wasn't part of the process.

Silvertip. Just for my curiosity, how can you tell its not carbed? Johnson did produce carbed 4 strokes in the small engine sizes correct?

 

[Bigbobcat]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Hi all,
Thanks for the tips ! it is a 4 stroke fuel injected motor.
I will purchase the service manual as suggested by you folks and will have the marina or someone familiar with this Johnson 50 hp to winterize for me for the first time.
I just don't want to screw up my motor, but will try to winterize it myself next winter.

 

[Bigbobcat]

Re: Help: Winterize Johnson 50 hp 4 stroke motor

Need clarification from Silvertip:

>Spraying fogging oil can screw up sensors in the intake system. You have the fuel stabilizer part right.
Does it mean I DON'T have do spray fogging oil ?
Does it mean it is correct: Add Stabil fuel stabilizer proportional to the gas inside the gas tank according to the Stabil label, then run the motor for 15 minutes while the motor is still in the water.

>To replace the oil filter you need to remove the top cover and lower left side cover.
Where is the lower left side cover ?

>The covers are plastic so watch what you are doing as you can easily damage them by improper installation
I will be careful when removing this plastic cover as it was removed 2 times already.

>You need a special oil filter wrench that fits this small size filter
Where can I buy this ? What does it look like ?

>The oil drain plug is a silver plug with hex head on it that is visible on the left side of the engine below the filter
I will check it out but what does the filter look like and where is the filter ?

>Then remove the lower unit vent and drain plugs to drain the lower unit.
Can you give more detail ? How to remove ? Where are the lower unit vent and drain plugs ? Does it drain automatically once I remove the vent & drain plugs ?

>Install the new filter and add the correct amount of oil.
What type of oil is it ? And how do I know it is correct amount of oil ?

>Refill through the lower drain hole until lub oozes out the top vent hole
How to refill ? Is there an opening for me to refill the oil ? What type of oil is it ? Is it OIL & WHAT TYPE ?

>Insert the top plug first, then the bottom. Don't ask why the top hole first -- just do it
Did you mean the "drain plugs" when I was removing the lower unit ?

>This engine uses coils directly over the spark plugs so there are no plug wires. If you are up to the task, remove the coils and plugs and spray the fogging oil into the cylinders and rotate the engine one or two revolutions to distribute the oil. But why bother.
So I just skip this step ?

>Your 4-stroke can survive a six month layup without fogging.
I don't know if this 4 stroke EFI was fogged before or not !? Do I still need fogging or should I skip FOGGING this winter ?

Thanks a lot !