1977 Johnson 6 hp - Fog engine at end of season and run gas/oil out?

[jimwalt]

Got my first boat and motor this summer and I want to treat it right. At the end of the season (in Michigan) should I Fog the engine and then run it out of gas/oil? I plan to store the engine inside my heated basement until next season.

Is it necessary to fog this type of engine? I want it to run for the next 20 years so I'll do whatever I need to do. It's a great engine and starts with 1 pull every time!

I'm using gas, with Johnson oil 50:1, and Sta-Bil 360 in every tank.

Thank you!

 

[oldboat1]

Can't really fog it and run the gas out. Would spray in fogging oil until the engine stalls.

A better way might be to run out the gas, then fog each cylinder through the plug hole (both plugs out), cranking clockwise by hand. Just a couple of squirts of oil in each cylinder. Finish by cleaning and regapping plugs, then put them back in place. Drain the gear case (check for water), then refill . Good to use fresh gaskets for the drain and fill plugs. Also good to put a plastic trash bag around the l.u. to keep critters out.

 

[bspeth]

I think if you run the gas out you will have no problems as long as you maintain your ignition.

 

[flyingscott]

You can fog it while it's running out of gas. Disconnect the fuel line and when you start to hear it rev up start spraying fogging oil in it. Do that until it dies and if you want to pull the choke 1/2 out and it will run a little longer.

 

[Johnny hockey]

I have always filled my tank with treated fuel (stabilizer) during winterization , fogged the engine until it quits . Check/change oil in the lower end and drained the cooling system the and I have never had a problem. As a side note: never start it out of water without muffs and a garden hose circulating water through it.

 

[Johnny hockey]

But I was always storing in the garage, so having a full fuel tank was not a concern. I don't believe storing it in your basement is the safest or necessary as you will likely still have residual fuel vapors present.

 

[racerone]

Fog this motor first.----The drain for the carburetor is the plug on the front of the bowl.----One of the easiest ones to do.----Yes these are an excellent motor and could well last for more than 20 years.-------Install a new impeller now and check the thermostat.---I often find the thermostat stuck open on these.

 

[David Young]

Remove your spark plugs and spray seafoam in the holes. Rotate the flywheel a couple times by hand, spray a little more seafoam in the spark plug holes. Put your spark plugs back in. Change the gear lube, your done. All for around $25

​Or take it to a boat repair, dealership and pay a couple hundred dollars for them to do the same thing

 

[ondarvr]

Fog this motor first.----The drain for the carburetor is the plug on the front of the bowl.----One of the easiest ones to do.----Yes these are an excellent motor and could well last for more than 20 years.-------Install a new impeller now and check the thermostat.---I often find the thermostat stuck open on these.

​^^^This is the best way, I have three of those motors, one about 10 years older than that one, I've used it since it was new, still runs great, although I don't treat mine that well.

​For correct fogging the motor needs to be running, then just drain the carb, might take 5 minutes. Just putting oil in a spark plug hole doesn't do it.

 

[jimmbo]

The reason of spraying the fogging oil thru the carbs/throttle bodies is to coat the bearings of the crankshaft, connecting rods, and wrist pins with oil to prevent rust. Spraying oil in the spark plug holes does very little, except coat the cylinder wall

 

[racerone]

I can not believe the confusion and mis-understanding on such a simple procedure as spraying storage oil into a running motor.----Yes the aim is to coat the bearings and such inside the crankcase !!!

 

[oldboat1]

Most motors never see dry, heated storage. If you do nothing to a fresh water motor getting that royal treatment, it will pretty much take care of itself -- seasonal running provides all the lubrication it really needs. Keep the carb clean, check the gearcase lube now and then. Change out the impeller every couple of years -- no need to service thermostats on a regular basis.

 

[jimwalt]

What is the impeller that many of these comments are referring to? Is it a DIY project for someone who has never worked on a motor?

 

[oldboat1]

http://www.iboats.com/Gearcase/dm/cart_id.627360115--session_id.303717515--view_id.1532326

Number 16 in the above diagram. It's the device that pushes water up through the cooling passages in the motor. It's rubber (neoprene?) and wears out or deteriorates. Whether it's a DIY job depends on skills and interests. You might look at a couple of youtube presentations, and see if it's something you would take on.

 

[David Young]

Well crap!! I'll be changing the way I get my motor ready for winter

 

[clemsonfor]

I am not sure if that motor has a pee hole, I know my late 60s 25 didn't and the early 70's didnt. but my point is of it doesn't all the water exits through the exhaust releifs and under water exhaust. if it's weak you won't really notice it the same as if there is a pee stream you check every time you start and put up your motor. so you will not notice a weak impellor as soon.

 

[racerone]

Most small / older outboards do not have a warning system or a " shutdown on overheat " switch.-----Therefor a wise owner would maintain the cooling system , that means a new impeller on a regular basis.----2 to 3 years on some motors and longer intervals on other motors !!

 

[Tony T.]

Fog this motor first.----The drain for the carburetor is the plug on the front of the bowl.----One of the easiest ones to do.----Yes these are an excellent motor and could well last for more than 20 years.-------Install a new impeller now and check the thermostat.---I often find the thermostat stuck open on these.

Interesting information I have a 85 year Evinrude 6 hp, I didn't know about the thermostat possibly sticking open.

Tony

 

[Vic.S]

Interesting information I have a 85 year Evinrude 6 hp, I didn't know about the thermostat possibly sticking open.

Tony

Last time I changed the pump impeller in my '84 6Hp I decided to take a look at the thermostat. It was stuck open!

Cleaning up with some descaler and a little gentle persuasion soon had it operating freely again , opening and closing at the correct temperature.

Re fogging . With no carb drain plug I try to do as suggested in #4.

 

[racerone]

The 84 model is a different machine from the 79 and older 6 hp.---Run at a fast idle.----Disconnect fuel line.---set your stop watch.----Note the time it takes to run out of fuel.---Fill carburetor again and repeat the procedure.---Start spraying oil into the intake 10 seconds before it runs out again.