Great explanation. I always seem to have to do the opposite, make a 4 post into a 3 post. Just making a little jumper wire from the side post to the mounting bolt to ground it….
On JD x310 4 post solenoid If u “jump” the solenoid to start (key turned to Start, temp connection from sol power-in terminal to sol power to starter terminal, then remove that temp connection when engine starts - At that point any preexisting safety switches are still active for continued operation of mower. Correct??
Theoretically yes, since all the safety connections add up to provide ground to the 4th terminal would have to be intact in order for the solenoid to operate, either by switch or by jumper. The safety's control the ground to the solenoid, without all being satisfied, the solenoid will not operate.
Mine looks just like yours, but the difference is that I have top and bottom posts and one sticking out directly towards me... I guess you would say it's in the center?!!?! Can you help me out here, buddy? This is racking my brain right now, I just wish mine looked exactly, and not just, like yours!😭😭😭
5 pole Solenoids have an extra terminal that will momentarily provide a full voltage to an ignition coil to aid in starting. Mainly used on old tractors and battery/points ignition systems. It bypasses the ballast resistor to give max voltage to start an engine then cuts out and allows the ignition switch power to go through the ballast resistor lowering the voltage to keep the coil from heating up too much. Hope this helps.
Yes. Just make sure it’s a true 4 prong and not a Ford solenoid. A Ford solenoid uses the fourth prong to put full 12 volts to the terminal. You want a four prong that uses the two small terminals to power the solenoid, one is ground the other is switched positive 12v
I am having a little trouble with an old tractor. It was doing nothing and I changed the Solenoid and now it is turning over but no spark. Would it be a bad safety Switch. My Dad wants me to cut them all and wire them together bypassing the Switches. It's probably the plugs wires and coil in my opinion.
To convert from 4 Post to 3 Why not just hook up ground from the safety switches to where it mounts between the actual solenoid/chassis frame. If you feel its not a good ground, why not run another wire from a good ground point back to the solenoid and tie to safety switch ground?
Ken, I bought a 4 wire solenoid for use as a glow plug relay on my Nissan Hardbody truck. I bought a grey market engine, and it bolted up to my transmission, but I had no glow plug relay, so I used the aforementioned relay as you discussed, and it worked great. Still have the engine, but I sold the truck. It was only 67hp, but it might be good on a tractor. I bought a turbo diesel engine for parts, but it's going in storage too. That turbo will give me a whopping 75 hp on the other engine.
The wire color varies based on the brand and model of tractor the solenoid is on. Do you have a specific brand and model? I can look up to see whether it uses a 3 or 4 post and assist you from there
Excellent video I understood everything you explained finally makes total sense now and your flowers are on point sir! Lol
Thanks for watching!
Great explanation. I always seem to have to do the opposite, make a 4 post into a 3 post. Just making a little jumper wire from the side post to the mounting bolt to ground it….
Great idea Ralph! Never thought of going from a 4 to 3 post!
Is that how you do it? My deckboat had a 4 post! The new starter only has a 3 post! I am so lost what to do!
On JD x310 4 post solenoid
If u “jump” the solenoid to start (key turned to Start, temp connection from sol power-in terminal to sol power to starter terminal, then remove that temp connection when engine starts - At that point any preexisting safety switches are still active for continued operation of mower.
Correct??
Theoretically yes, since all the safety connections add up to provide ground to the 4th terminal would have to be intact in order for the solenoid to operate, either by switch or by jumper. The safety's control the ground to the solenoid, without all being satisfied, the solenoid will not operate.
Mine looks just like yours, but the difference is that I have top and bottom posts and one sticking out directly towards me... I guess you would say it's in the center?!!?! Can you help me out here, buddy? This is racking my brain right now, I just wish mine looked exactly, and not just, like yours!😭😭😭
5 pole Solenoids have an extra terminal that will momentarily provide a full voltage to an ignition coil to aid in starting. Mainly used on old tractors and battery/points ignition systems. It bypasses the ballast resistor to give max voltage to start an engine then cuts out and allows the ignition switch power to go through the ballast resistor lowering the voltage to keep the coil from heating up too much. Hope this helps.
Great video! You explained it very well
Thanks for watching!
Can you use a four prong over a three prong
Yes. Just make sure it’s a true 4 prong and not a Ford solenoid. A Ford solenoid uses the fourth prong to put full 12 volts to the terminal. You want a four prong that uses the two small terminals to power the solenoid, one is ground the other is switched positive 12v
My boat old omc / gm starter had 4 post. The New starter has 3 post. There is a way to still use the 3 post? Thankyou!!
The 4th post is usually used for safety switches like a neutral safety switch. I would get a 4 post solenoid to be safe.
Ty ❤
Thanks for watching!
I am having a little trouble with an old tractor. It was doing nothing and I changed the Solenoid and now it is turning over but no spark. Would it be a bad safety Switch. My Dad wants me to cut them all and wire them together bypassing the Switches. It's probably the plugs wires and coil in my opinion.
What is the tractor brand and model?
@@KensSmallEngineRepair Old Roper
@@michaeldemers2716 the model of Roper tractor?
@@KensSmallEngineRepair IDK. But this morning I got a premonition it was the points. I may take a fine sandpaper to it and gap them with a matchbook.
@@KensSmallEngineRepair I definitely did the Solenoid right. I double checked. It's something else.
To convert from 4 Post to 3
Why not just hook up ground from the safety switches to where it mounts between the actual solenoid/chassis frame. If you feel its not a good ground, why not run another wire from a good ground point back to the solenoid and tie to safety switch ground?
THANKS, i did this mode exactly as you said with adding a wire to a bolt for ground and it worked perfect on my dirt bike😎👍👌
Glad I could help!
Cool info Ken I think this will solve an issue i've had with my 79 Aarons tractor.👍
Hope so. Good luck!🍀
Bout time I saw those Mums in full bloom!!! Looks awesome. Yup don't bypass safety switches they are there for a reason. Good job Ken
Thanks so much I couldn't find any other videos that explained it as well as you did
Thanks for watching!
Great information. Now I know and understand the difference. Thanks for the video.
Glad you enjoyed it thanks for watching
Great video , finally
Thanks for watching!
Great explanation thank you sir
Thanks for watching!
Good information ken
Thanks for watching!
Good one Ken - very well explained 😃
Glad you liked it. There are always simple solutions to many problems
@@KensSmallEngineRepair I often struggle with electrical repairs - so nice to have it explained in a way that I could understand. Thanks Ken.
Great video
Glad you enjoyed it thanks for watching!
Ken, I bought a 4 wire solenoid for use as a glow plug relay on my Nissan Hardbody truck. I bought a grey market engine, and it bolted up to my transmission, but I had no glow plug relay, so I used the aforementioned relay as you discussed, and it worked great. Still have the engine, but I sold the truck. It was only 67hp, but it might be good on a tractor. I bought a turbo diesel engine for parts, but it's going in storage too. That turbo will give me a whopping 75 hp on the other engine.
Very helpful
Thanks for watching!
Thank you such a very simple explaination for the 3 post
Great tip Ken
Thanks Henry!
good vid
Thanks for watching. What isn’t clear? A model train guy such as yourself should be well versed in electrical theory!!
What are the colors of the wires that hook to the solenoid. And where do they hook up to the solenoid
The wire color varies based on the brand and model of tractor the solenoid is on. Do you have a specific brand and model? I can look up to see whether it uses a 3 or 4 post and assist you from there
Genius
Thanks for watching!
Just got a 1984 Ford yard tractor I’m rewiring. This helped a lot thanks!
Great, thanks for watching!