35 hp super sea horse wont shut off

[liverkiller]

i have a uknown year of a johnson super sea horse i just bought it its on my pontoon boat its an electric start 35hp johnson super sea horse and it fires right up when i turn the key but it will not turn off when i turn the key off ?? also how do i identify my motor.. i also have a broken shifter and throttle cable it has dual lever controls at the control end the cables resemble a type 400 cable but at the motor end they do not does any one know what type of cable or where to get a service manual for my motor would be

 

[tx1961whaler]

Re: 35 hp super sea horse wont shut off

There is a model number on the transom mount ID plate, or on a small round plug on the powerhead.

 

[lindy46]

Re: 35 hp super sea horse wont shut off

Sounds like the kill circuit is disconnected or there is a broken wire. There are two wires (probably black) connecting the points to the key switch. When in the "off" position, they ground out the points and that stops the engine. Check continuity at the key switch. If that's not the problem, one of those black wires could be disconnected at the points or somewhere else between the points and the key switch. One of those black wires goes from the points to the cut-out switch on the side of the engine before continuing on to the key switch.

 

[CATransplant]

Re: 35 hp super sea horse wont shut off

One of the common places for the black kill wires to fail is at the plug on the engine. Take a good look under the cowling at the two black wires near the engine plug. I had the same problem with my RDS-20, and found that one wire had broken off close to the plug. It couldn't be repaired, so I reverted back to the choke-to-kill strategy used on those engines before 1958. Just idle down and push the choke button.

 

[asdasc]

Re: 35 hp super sea horse wont shut off

The choke to kill method actually floods the engine, right? Would that also provide better protection? It seems that when you flood it shutting down you dump more of that oil mix into the combustion chambors, which may give you better lubrication when you go to start it when cold the next time.

 

[F_R]

Re: 35 hp super sea horse wont shut off

i have a uknown year of a johnson super sea horse i just bought it its on my pontoon boat its an electric start 35hp johnson super sea horse and it fires right up when i turn the key but it will not turn off when i turn the key off ?? also how do i identify my motor.. i also have a broken shifter and throttle cable it has dual lever controls at the control end the cables resemble a type 400 cable but at the motor end they do not does any one know what type of cable or where to get a service manual for my motor would be

As for the cables, I am guessing that you have the old style cables with a brass trunnion where it anchors to the motor, whereas the newer (type 400) has a black plastic adjustable trunnion nut. The 400 is as close as you are going to get, since the brass trunnion hasn't been made for many moons now. The 400 will work, but you will have to replace the cable locks that they fit into---or do some creative engineering with a chainsaw file. Once done, you will like the 400 much better.

Service manual: A lot of people bad-mouth them, but in my opinion the Seloc manual sold here at iboats is just fine for the average joe. If you want a more professional manual, www.outboardbooks.com has legal copies of the original factory manuals. But remember that the factory manual was written for the dealer's service shop and assumes the reader has a basic knowledge of what he is doing. The Seloc book explains a lot ot basics that the factory one leaves out because you are supposed to already know it.

 

[CATransplant]

Re: 35 hp super sea horse wont shut off

The choke to kill method actually floods the engine, right? Would that also provide better protection? It seems that when you flood it shutting down you dump more of that oil mix into the combustion chambors, which may give you better lubrication when you go to start it when cold the next time.

Yeah, sorta. If the outboard is idly properly, though, choking it kills it pretty quick and there's not enough engine vacuum to really flood things. It's a stopgap measure, really. I eventually replaced the kill wire with a separate wire that was external to the cable. Since I seldom removed the plug, I added the new kill wire with just a crimp connection. If it was ever necessary to remove the engine or something, I'd have just cut the wire and put it back together later.

Still, the choking worked just fine until I took the time to fix it.

 

[liverkiller]

Re: 35 hp super sea horse wont shut off

ok il check the wiring on the motor i know one of the black wires are not hooked to anything it has an eylet on the end of it.. another question what are the two mercury type switches for on the throttle for ?? and does any one know how the kill wires hooked up to the ignition switch they are just hanging at the end as well

 

[liverkiller]

Re: 35 hp super sea horse wont shut off

where is the transon mount id tag at or the little round plug in the power head i have looked and can not find any numbers that mean anything

 

[lindy46]

Re: 35 hp super sea horse wont shut off

ok il check the wiring on the motor i know one of the black wires are not hooked to anything it has an eylet on the end of it.. another question what are the two mercury type switches for on the throttle for ?? and does any one know how the kill wires hooked up to the ignition switch they are just hanging at the end as well

That motor is either a 1958 or 1959 - the only two years they made a 35hp with a kill switch circuit with two mercury switches. One of those mercury switches cuts power to the starter solenoid if the throttle is advanced past about half-throttle to keep it from starting and running away. I believe the other connects to the cut-out switch and shuts the motor off when a runaway condition occurs when the motor is already running. Does the wire with the eyelet on it go out to the ignition switch? Or does it go up into the flywheel? In either case it connects to the cut-out switch on the port side of the engine. There should be another wire already connected to the cut-out switch which pairs with it (either going to the underside of the flywheel or to the ignition switch. The ignition end of the two kill switch wires connect to the stop terminals on the key switch. Put an ohmmeter on the terminals on the key switch and find the terminals which ground out in the stop position. Those are the terminals to connect the kill switch wires to. For the model number of your motor, look for the freeze plug on the starboard side of the engine block.