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Ok so maybe it isn't that serious, but I have a couple of pretty serious problems I need some help with. For the first I layed my trolling motor in my garage with the exast hole fasing down for a few days and when i came back i noticed a small pool of oil (a teaspoon or so maybe less) what concerned me was that it had come from the exhaust port. On further examination I believe I have that figured out , but I need some confirmation and help on the solution. In the first picture the area you see circled is where the oil came out. the second is where it appeared there may be a leaky gasket where there was also a small amount of oil. The third is the path I think the oil may have take. From the gasket down inside of the exhaust port and out of it. I just want to know if any of you experts agree and how I should go about fixing it?
Now to my second problem. In doing my exploritory work. I removed the drain plug for the oil and drained it out. It looked ok with a little bit of stain in the last few drops as oil normally does when drained out of the lower unit. The problem I have is that I realized all too late that I am not sure of the oil capacity of my motor and i am actually not sure even what year it is. My Uncle gave it to me last year and told me it was a 10hp johnson. I am wondering if anyone can recognize by looking at the motor what it actully is as far as year and such. the pictures I have enclosed of it are of it at various angles and also of the number stamped on the inside of the case on the right side below the motor. Any help would be greatly appreciated,
Jed Burton
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It is a Johnson for certain. It could be either a 9.9 hp. or a 15 hp. the only way I know of to tell for sure would be to take it to a dealer & have them check the serial number.
Some years ago, folks were putting the cover from a 9.9 on the 15 hp models so they could run them on the Ruby Marsh in Nevada which has a 10 hp. maximum. The Nevada fish & game finally got wise from what I've heard & the only way to easily check is from serial numbers.
As far as how much oil to put in the lower unit, Here's how I do it: Pull both the bottom & top plugs & let it drain thoroughly. You can get gear oil in those 1 qt. squeeze bottles with the small tip that you have to cut off like you do a caulking tube. I cut the tip off just enough so that it will fit tight in the bottom hole. After the oil is fully drained, stuff the tip if the oil bottle in the bottom hole & squeeze until oil runs out the top hole. Put the bottom plug in very quickly & then the top plug & you've got it. To do this you really need the engine in an upright position. It'll make a little mess but it's a heckuva lot quicker than trying to add the oil through that little top hole.
As for the leak, you could probably just loosen the bolts below the spot where the leak is coming from so you can separate that gasket joint enough to allow you to squeeze in a little silicone sealant all the way around. Maybe sorta force the silicone in with a toothpick or small screwdriver then tighten the bolts & you'll probably have it.
Good luck.
Somebody else might have a better way & I'll be watching this thread to see 'cause I don't really like the smell of gear oil on my hands.
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I agree with Geezer, defenitely a Johnson Sea Horse, probabaly a 9.9. You can just call a johnson dealer with the number and they can tell you the year and the HP. Those are good little motors, and will usually run forever.
The gear oil is easy. Take out the drain and fill plugs, get you a quart of Johnson gear lube, and buy one of the accessory pumps (makes things very easy). Then put the oil fill tube in the lower drain hole (yes it sounds strange) and fill from the bottom up. When oil come out of your upper fill hole, quickly remove the oil tube and replace your drain plug. This method prevents air from being trapped in the oil if you fill it from the top. My guess is that it will use about a quarter of a quart.
If you take that lower unit apart, make sure you replace the impellor while you are down there. They are cheap, and fairly easy to replace once you get the unit apart. I found that getting the shift mechanism back together is the hardest part of taking down the lower unit. Good luck.
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when you say top and bottom drain holes are you talking the ones about 5" or so appart or is there one up higher on the top of the engine? Also on the oil. Is it just gear oil or will 10w30 work like in the outdrives. Thanks again for the info on that. Does anyone know how or how much it would cost me to find the manuals for that motor?,
jed
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Yeah, they are usually about 5" apart. One is usually on the bottom of the "torpedo" part of the gear housing, that one is the drain hole. They are usually on the same side of the lower unit as well. You need to buy the special gear oil for them. It has better ability to keep its viscocity when mixed with a little water. I'm not familiar with all brands of outdrives, but I know in the merc outdrives, you still need to use the special gear lube. The problem with conventional oil is that it rapidly breaks down and looses its ability to properly lubricate when a little water gets mixed in. I personally would never put oil designed for automobiles into any outdrive/outboard motor...just my 2 cents. The manuals usually go for around $35. They can be picked up at your local Johnson dealer.
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[font "Comic Sans MS"][red][size 4] Hi Jedburton, hey I have a 1968 6hp johnson kicker and the oil leakage from the seal can be cured either with replacing the gasket, or I have used gasket material called " The Right Stuff " . It works very well and you don't need to use a lot . What is your fuel /oil mixture? That could be part of the problem.[/size][/red][/font]
[font "Comic Sans MS"][#ff0000][size 4] AS for the gear Lube, you need to use a High Viscosity 80w90 outboard gear oil.These small motors usually take about 8-10 oz.in the foot. Hope this helps[/size][/#ff0000][/font]
[font "Comic Sans MS"][#ff0000][size 4]AFDan52[/size][/#ff0000][/font]
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Before you go buying a manual, check with the local library. You'd be surprised how much of that kinda stuff is available. You can get it & look it over, maybe learn what you want to know or decide if what it has is worth buying it.
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the mixture I have been using is 40:1. I will pick up some gear oil then. Do I have to get it at a marine shop and pay exhorbitant prices or can I pick it up at autozine, checkers, or wal mart. Any Idea about what year mine might be?,
jed
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I think wal-mart sells marine gear lube...not sure, but I think I've also seen it at the auto parts stores. I don't think you have to buy one particular brand, just something reputable.
My guess is late 60's. My dad used to have a 73, that looked very close, just a little different on the front panel. Just call the local Johnson dealer with the SN tomorrow and they can tell you what year it is. I wish the serial numbers were a little more user friendly, like telling you what year it was manufactured in. Oh well. I think the mixture is supposed to be 50:1 in that motor though...of course running a little rich is better than a little lean if you ask me, you just will foul plugs a little quicker, but it won't harm the motor.
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[font "Comic Sans MS"][red][size 4] I'm thinking that you might want to try running a 50:1 mixture, my 6hp runs great on that.Some oil residue will blow out of the exhaust port that you circled, that is normal on an engine that has a few years on it.Mine does it also.[/size][/red][/font]
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[font "Comic Sans MS"][#ff0000][size 4]AFDan52[/size][/#ff0000][/font]
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[font "Comic Sans MS"][red][size 4] You can get the lower end gear oil at Wal-Mart or at most Automotive Stores.[/size][/red][/font]
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[font "Comic Sans MS"][#ff0000][size 4]AFdan52[/size][/#ff0000][/font]
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I have a suggestion, when you fill the lower unit from the bottom with the gearcase oil, when the oil comes out of the top plug screw the top plug in first before you remove the bottom fill pump. This way you will lose very little oil when you screw the bottom plug back in. Also taking the lower unit off of these little outboards or any outboard for that matter is generally a somewhat easy task, then you can replace the water pump impeller and possibly install any seals that are worn. The only trouble you may have is lining up the shift linkage and my kicker has the water pump tube that runs up to the power head and it can be a pain to align. Like others have said this little motor will give you years of service with just a little care. I have a 1963 Merc 9.8 hp. that still runs fine and is my kicker. Good luck and have fun!! Sincerely John R.[  ][ ]
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Its a 9.5 "pot bellied" Johnson. Dang good old motors. Its a 1960's to 1970 year, I'm guessing 1966 from the color but it looks like it may have been painted again. I'll check the number you posted off the engine, but I'll bet its not the serial number needed to deterimine the year, I'll bet its a referece or part number in the pic you posted.
First off, check the oil on your garage floor. I'll bet its not 90 weight oil coming out of the foot (if it's not thick and smells like a dead dinosaur its 2 cycle), I'll bet its unburned 2cycle oil coming off the head which is common especially if you troll it a lot.
If your foot oil isn't milky white or if you let it sit for a while, water will actually be the first to come out of the foot when you pull the lower plug if the seals are shot (water will seperate to the bottom of the foot when stored).
You don't need to know what year it is to fill the foot back up with oil. Just go buy a quart (it will take half or less to fill it up) and pull both lower and upper plugs. Squeeze the oil into the foot from the bottom plug until it comes out of the top plug. Replace bottom plug. Replace top plug. Done.
You should do this at least once per year or more if you run it a lot anyway as part of its maintenance.
Never use anything other than outboard lower gear unit oil. Its not that expensive, lower gear sets in your outboard are!!!! Don't take unecessary chances over $.75 savings. Also, as mentioned, 50:1 is your better bet when mixing your oil, but you will still, I'm sure, see some coming out of your exhaust port from time to time.
Manuals are $15 to over $100. You can buy em' off e-bay, local parts stores or your local OMC dealer.
Also, its best to store your motor upright, not lying down if you can help it.
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