need help with '55 RDE17 wiring

breeze

Cadet
Joined
Jun 9, 2007
Messages
20
I just picked up my first boat, 1950 14ft Alumacraft with an RDE17 25HP motor.

Steering cables and shifter linkage are hooked up, but the guy I purchased from was in process of restoring the boat and didn't finishing putting all of it back together. What I have: from the motor I have 2 large pos. and neg. cables. the negative is grounded to the motor case, the positive goes to the starter. Also, there is one thin wire(maybe 16ga.) with a ring terminal on it exiting the motor. Internally, this wire comes off a sort of round thing, near the top of the motor, behind the carb. and muffler. I need to know what this wire does. Does it act as a kill switch when grounded, or is it used to charge the battery? If it is not a kill switch, what is used to turn the motor off?

The starting solonoid is remotely mounted on the transom shelf. Would I be correct to assume the large negative goes to the battery, and the positive to the solonoid? There is a key switch on the side console.

There is another round part (looks like a hazard flasher relay in your car) at the bottom of the motor just behind the carb. It looks like it has a lug for a wire. lug appears to be copper with a screw hole in it. but there is nothing attached to it. Do I need to hook this up to anything? I'm ruling out electric choke, as the motor has a manual choke pull.

I'm really excited about getting this motor going! The lower end lube came out clean today, compression seems tight when i pull the starting cord and it spins smoothly. It is VERY clean inside.

Thanks for any input you may have, I know I ask a lot of questions:redface:
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: need help with '55 RDE17 wiring

The round thing on the bottom of the carburetor is an electric choke solenoid. Yeah, I know, it also has a manual choke. The other thing with a wire going to the center of it and a vacuum hose to the manifold is a vacuum cut-off switch which prevents the motor from running wild in neutral. There is no ignition shut off. You just slow the motor down till it stalls, or flood it out with the choke.

If you want to PM me your e-mail address, I will send you a diagram.
 

tashasdaddy

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Nov 11, 2005
Messages
51,019
Re: need help with '55 RDE17 wiring

starter box, and diagram this is 35hp but should be the same.
 

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breeze

Cadet
Joined
Jun 9, 2007
Messages
20
Re: need help with '55 RDE17 wiring

Imported_F_R, check your p.m. i sent you my email.

tashasdaddy, thanks for the diagram:) do you have it in a larger format? 216x280 is barely readable to me. I'll pm you my email as well. That'd be great!

Thanks for the input guys! :)
 
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