Few repair questions

[spy1309]

After 6 months of crappy winter I am ready to restart working on my boat I got a 1960 Cutter JetdeVille with a 1960 Johnson 40hp motor.
So far I was not succesfull with the engine even after carb rebuild, tune up, new head gasket still runs rough.
In the winter I started hogging parts from ebay.
For $40 I got a 1962 Johnson 40hp motor block honed, cleaned pistons with brand new rings, and a full set of gaskets I think that it was a good deal.
Also for $10 I got the carburator for the same motor.
Now I want to transplant the 1962 carburator to my 1960 the only difference is that my 1960 has adjustable low and high speed jets, the 1962 has only low speed adjustable jet, the high speed is fixed.
Do you guys think that it will work on my 1960 all the conections are the same.
Also my starter solenoid crapped on me, does somebody know what is the part number from OMC for starter solenoid?
Thank you.

 

[F_R]

Re: Few repair questions

I don't know of any reason the carb wouldn't work.
Solenoid is 378444. Go ahead and spend your money on one if you want, but that probably isn't the problem. 99% of replaced solenoids do not cure the problem. How about your safety switch?

 

[spy1309]

Re: Few repair questions

F_R as always you are the first to help thank you.
The reason I think is the starter solenoid is the fact that if I use jumper cables from the battery directly to the starter connections it works, the starter cranks the engine and it starts .

 

[F_R]

Re: Few repair questions

Even so, check the voltages at the solenoid. As I suggested, a bad safety switch will keep it from working. Much more common than a bad solenoid. Whatever you do, don't go out and buy a car solenoid. They look exactly alike but are different inside. But not only will it not work, it will instantly destroy the safety switch.

When you turn the key there shoud be 12 volts at one of the small posts on the solenoid and 0 volts on the other. If you have 12 volts on both, the safety switch is either open or no good. OR, you have already put in a car solenoid.

 

[spy1309]

Re: Few repair questions

No the solenoid is original from the boat it was never replaced nor did I replaced it.
Now clear my head whitch is the kill switch? My engine shuts off from the ignition switch grounding the black coil wires, this is the one you are talking about?

 

[F_R]

Re: Few repair questions

No, not kill switch, SAFETY switch. It's purpose is to prevent you from starting the motor at high throttle settings and running over somebody. There were a couple of kinds on the 40. I believe yours is the one or two little bullet thingys on the throttle gear at the motor. Later ones had a switch up under the magneto that was operated by advancing/retarding the spark.

Anyhoo, do yourself a favor and go to Wally World and buy a cheap multimeter for around ten bucks or less. That will test voltages. Ground the black lead to the junction box and connect the other one to one of the small posts on the solenoid while somebody turns the key. As I said, should be 12V on one and 0V on the other. Post back here with the results if you need more guidance.

 

[spy1309]

Re: Few repair questions

Lol F_R I am a compuetr tech I have tons of multimeters , Il go outside and measure.
Thank you again for your help.

 

[F_R]

Re: Few repair questions

Then you are at least as smart as I am. You can certainly trace a simple starting circuit. To follow up, the safety switch completes the circuit for the solenoid's pull-in coil. Juice from the key switch to one small post, out the other small post, to ground through the safety switch.

 

[spy1309]

Re: Few repair questions

Is not about smart, I can ,,smoke" a computer in 15 min but I lost days if not weeks with this boat and I will not stop till I make it run like it suppose to, You help me on the past to so I will take advantage of all info you can share,
Also I have an unrelated question, I bought from NAPA the carburator rebuild kit, and the point set with condensors, I remember a while ago I came over a post who was stating that for the 1960 Johnson 40hp there are 2 part numers and if you use the wrong one you can run into problems because in one of the sets the value of the condensors is different, plus I am not happy with the NAPA quality of the parts, the points does not fit as nice as the old ones.
Do you know what is the correct part number for the points?Also can you suggest another place to buy besides NAPA?