1973 Johnson 40hp Super Sea-Horse/Wiring

Iceman9272006

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Nov 9, 2005
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I have a 1973 Johnson 40hp. Super Sea-Horse out board motor, Model # RD-22 Serial # 2125395 I'm selling this motor and I need a ghetto way to start it for the buyers.I have it in a 55gal. drum,a 12V car battery,a ign. switch for a car,and 4 wires comming from the motor..The ign. switch has a Bat.terminal,Ign.Terminal,Start Terminal,and a Acc.terminal.The wires coming from the motor,wire coming from the start solenoid,(hooked to st.on the key,works good),wire coming from Vac.cutout switch,one from choke solenoid,and one from bottom side of armature plate..I'v tryed everything nothing works just burned the points (filed and reset)I even put a chrysler resister on it did burn the points,but resister started to smoke.Do I need a marine Key switch ?? Different resister ?? Different Batt. ?? Or.........?????
 

MCM

Lieutenant Junior Grade
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Jun 1, 2005
Messages
1,201
Re: 1973 Johnson 40hp Super Sea-Horse/Wiring

I don't know if this is bad news or not but an RD-22 is a 1960 40hp. You may be able to jump it at the starter solenoid.<br /><br />Oh, Welcome to Iboats :)
 

Iceman9272006

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Nov 9, 2005
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Re: 1973 Johnson 40hp Super Sea-Horse/Wiring

Starter works fine,turns motor smooth .<br />Oh thank you guys !!
 

BoatBuoy

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May 29, 2004
Messages
4,856
Re: 1973 Johnson 40hp Super Sea-Horse/Wiring

It's a magneto ignition, so it doesn't need the ignition switch and associated wiring to start. You can disconnect the helm wiring harness. It only needs it to stop. In lieu of an ignition switch to turn off, choke it to stop it.<br /><br />To crank it without wiring harness installed, simply connect a jumper from #3 on the solenoid in the drawing to the positive(+) pole of the battery, or #6 on the solenoid. If all is well, it will crank, and maybe start.<br /> (Drawing courtesy of Xcusme.)<br />
startcircuit.jpg
 

Iceman9272006

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Nov 9, 2005
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Re: 1973 Johnson 40hp Super Sea-Horse/Wiring

Thanks BoatBuoy;<br /> I do remember having just the #3 post of the soleniod hooked to the st.terminal of the key and the plugs were firing.I will repost to let you know it went smooth. Thanks!!<br /><br /> Iceman9272006 !!
 
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