1966 40hp Johnson electric Super Sea Horse

[RyanW]

Thanks for the quick replies, and for the welcome!<br /><br />Model number is RDS-28B Not sure what the B mean, I've only found reference to RDS-28. Maybe it comes with a boat?<br /><br />The previous owner was a mechanic and took great care of it. The lower unit oil was just changed. I'm not sure what other work he has done.<br /><br />The leak looks like it is from the right and left sternmost scews in the row that holds the cap on, not the phillips on the side of the skeg. I unscrewed the top fill screw slightly and oil came out of that<br /><br />The fuel lines and bulb are all new, and look like they are pretty good quality.<br /><br />The question about the tank is because I'm not sure if it has a fuel pump. Some older outboards require the metal tanks due to the pressure required to move the fuel.

 

[RyanW]

Re: 1966 40hp Johnson electric Super Sea Horse

Another question, should I get the owners manual, or service manual, or both?<br /><br />Thanks again.

 

[RyanW]

1966 40hp Johnson electric Super Sea Horse

Bought a boat with this motor. This is my 1st boat and motor and I have a few basic questions. I plan on ordering the factory repair manual. <br /> It starts great with a little choking, runs great at high speed (high speed jets in carb) but runs a little rough at low speeds. I have not played with the carb at all. Should I start adjusting the low speed mix, then the idle screw?<br /><br />It came with two old metal gas tanks. Does this model require the same style gas tanks, or can I replace them with a vented plastic tempo one?<br /><br />It has an electric start, does this motor have an alternator of any kind, or will I have to charge the battery seperately every so often?<br /><br />There is a slight oil leak from the lower unit, ~1-2 drops per day. It seems to be coming from one of the screws one the bottom (not the drain screw) I tried tightening it, but it's been painted over and won't budge. Any tips to eliminate this?<br /><br />Thanks

 

[Paul Moir]

Re: 1966 40hp Johnson electric Super Sea Horse

Welcome to Iboats, RyanW<br /><br />Yes, absolutely play with the mixture knob. With the engine all warmed up, turn it in (clockwise) until the engine begins to cough and miss a bit, then open it up a bit (turn counter clockwise) until it runs well. Then, with the engine in gear open up the throttle a ways. If the engine hesitates, try turning the mixture control a little more counter clockwise.<br />It takes a while for the engine to react to changes with that control, so make little 1/8" turns and wait a few seconds for it to respond. You may have to loosen the knob off it if you seem to need to go outside the range of it's setting. When you're done just tighten the knob on so it points to the centre.<br />You may use a modern plastic tank. They are superior. A word of warning though - the Tempo fuel line & bulb is pretty crummy. If you're replacing that too, pick one up from your local Johnny/Rude dealer. It's probably the best one out there.<br />That engine came standard with a generator. It's sort of necessary since it's an electric shift. The generator is seperate and should be located on the right side of the carburetor. It'll look kind of like a starter except it's connected to the flywheel by a toothed belt.<br /><br />A leak in the lower unit will allow water in which is the greater problem. Is it one of the screws that hold the 'cap' on (ie, the part that forms the skeg) or is it the phillips screw on the side of the skeg (the fin at the very bottom of the lower unit) ?

 

[lark2004]

Re: 1966 40hp Johnson electric Super Sea Horse

Welcome aboard!<br /><br />First things first, can you post us the model number? should be on the transom bracket. <br /><br />Second, oh scratch that, you already know about the manual..... <br /><br />third, How long since the motors last service? did the previous owner give you any idea?<br />It may be a good idea to remove the entire lower unit and replace your water pump, while your there you can address that oil leak. I would consider waiting until you get the manual for that part though.<br /><br />The plastic tank sould be ok, maybe Paul Moir (a member that you should really pay attension to) can clarify this....<br /><br />Lastly you may need to rebuild your carb.<br />A kit is easily availably from any number of sources, try and get one that has a plastic float in it, the old cork ones that were fitted to these motors don't last with today alcohol laced fuel.<br /><br />good luck with it and keep posting<br /><br />sorry paul, you beat me in there

 

[CATransplant]

Re: 1966 40hp Johnson electric Super Sea Horse

Don't bother about the owner's manual, but do get the service manual. That's the one you're going to need. The owner's manual is cool to have, and will impress the person you finally sell the motor to someday.

 

[CATransplant]

Re: 1966 40hp Johnson electric Super Sea Horse

"The question about the tank is because I'm not sure if it has a fuel pump. Some older outboards require the metal tanks due to the pressure required to move the fuel. "<br />--------------------------------------<br /><br />The two-line pressurized tanks predate your outboard by several years. Yours does have a fuel pump, so you can use any tank you like. I like the plastic ones...they never rust.