Confused about ignition switch

[Wheelhorse#1 1,657]

Hello all.Ok I’m trying to learn about which  ignition switch on a 73 auto 12hp model 10465.

when I look at the back of the switch there is 5 terminals .I cleaned the terminals off and they are stamped S + A+ M+G and a green wire to a terminal that is not marked ?

 

Im confused as to if it is a 4 key position or 3 ? 
I need to order a new one as it’s completely worn out.I included a picture.It only has a patient number far as I can see.

I’ve read and looks like it could be a 92-6785 or a 101917 switch?

thanks 

 

 

Edited October 24, 2021 by Wheelhorse#1

[ebinmaine 67,497]

Does your tractor have points and a battery ignition or is it a trigger type with a magneto?

 

 

[Wheelhorse#1 1,657]

It’s has battery ignition with points and stator kohler 301.

 

Edited October 24, 2021 by Wheelhorse#1

[ebinmaine 67,497]

Points ignition should be able to use a Toro 103990. That's a 3 position switch. 

You may have a 4 position switch but your tractor can be rewired easily to adapt. 

 

@squonk @gwest_ca @953 nut 

I thought switches with an "M" were for non-points tractors?

 

Is my train of thought correct?

 

 

[Wheelhorse#1 1,657]

4 minutes ago, ebinmaine said:

Points ignition should be able to use a Toro 103990. That's a 3 position switch. 

You may have a 4 position switch but your tractor can be rewired easily to adapt. 

 

@squonk @gwest_ca @953 nut 

I thought switches with an "M" were for non-points tractors?

 

Is my train of thought correct?

 

 

thanks
This is part of what doesn’t makes sense to me either .

[squonk 41,118]

 Replace switch with 103990.  73 had an accessory position on  the switch. Wire it up as a 103990

 

Edited October 24, 2021 by squonk

[ebinmaine 67,497]

3 minutes ago, squonk said:

Replace switch

What did the M terminal do on the OE set up?

[Wheelhorse#1 1,657]

Thanks for the help all.Wiring is confusing to me at times.

[squonk 41,118]

There shouldn't be an M on the switch. Sounds like someone installed the wrong switch at some point

 

[Wheelhorse#1 1,657]

6 minutes ago, squonk said:

There shouldn't be an M on the switch. Sounds like someone installed the wrong switch at some point

 

Yes the stator and amp meter  weren’t hooked up at all and someone replace part of the wires to different color too.

 

[squonk 41,118]

I would get a 103990 switch and start from scratch.

[Wheelhorse#1 1,657]

15 minutes ago, squonk said:

I would get a 103990 switch and start from scratch.

Yes Sir 

Mind as well do re wire wile I’m at it 

[ebinmaine 67,497]

35 minutes ago, squonk said:

There shouldn't be an M on the switch. Sounds like someone installed the wrong switch at some point

 

35 minutes ago, squonk said:

 

 

 

Seems a VERY common thing to. 

The newer wrong switch is very easy to aquire. 

 

42 minutes ago, Wheelhorse#1 said:

Wiring is confusing to me at times.

 

Treat each circuit as its own individual task.  

Double check your triple checks so you don't let the magic smoke out of the wiring. 

 

Repeat a few times and... Done. 

 

 

Where exactly is your M terminal wire connected as it sits now??

 

2 minutes ago, Wheelhorse#1 said:

Yes Sir 

Mind as well do re wire wile I’m at it 

 

I've done a few. So has Mike.  

Keep asking questions. 

It's really fairly easy once you get your head wrapped around it. 

[ebinmaine 67,497]

Also... Get a good name brand quality switch. Please. 

 

There are a lot of cheap switches that will offer you a very short life span.  

 

The Toro switch is available for $18-$25 depending where you look.  Sten's is also good.  

 

[peter lena 8,627]

@Wheelhorse#1 in addition to getting the correct switch , would consider replacing those original cables , could easily be corroded inside , causing issues. found many original wires , to be very stiff , cracking easily , internal corrosion . why not change it all out ? only my experience , pete 

[Wheelhorse#1 1,657]

Advice we’ll taken.Just order a stens replacement,I have had good experience with replacement parts  from them.

Now trying to find decent copper replacement wire.

thanks again!

[ebinmaine 67,497]

5 minutes ago, Wheelhorse#1 said:

Now trying to find decent copper replacement wire.

I'll send a PM

[rjg854 11,361]

I got my wire in different colors from my local farm/tractor place.

[953 nut 55,229]

9 hours ago, Wheelhorse#1 said:

Wiring is confusing to me at times.

The drawing below may help with your confusion. Each portion of the electrical system is separated from others so you can see what goes where. This is not a wiring diagram for your tractor as it has no safety switches. It is drawn with the 103-990 ignition switch. 

[Gregor 4,846]

18 hours ago, ebinmaine said:

Where exactly is your M terminal wire connected as it sits now??

I'd kind-a like to know that too.

 

The other end of the wire of course.

Edited October 25, 2021 by Gregor

[Wheelhorse#1 1,657]

3 hours ago, Gregor said:

I'd kind-a like to know that too.

 

The other end of the wire of course.

The new switch is to be delivered today so when I trace it out I’ll post.

 

[gwest_ca-(File Mod) 11,043]

A replacement wire holder for the switch terminals is available with and without wires.

Click on the picture to see it. Makes a nice installation. The wires colors do not match what we have.

 

[Gregor 4,846]

Where do you order Stens parts?

[wallfish 16,999]

8 minutes ago, Gregor said:

Where do you order Stens parts?

I typically get my stuff here

http://www.psep.biz/store/electrical_mower.htm

and order a bunch of stuff at a time like coils of cable and conduit for controls, switches, those switch connectors, filters etc etc

[Wheelhorse#1 1,657]

10 hours ago, Wheelhorse#1 said:

The new switch is to be delivered today so when I trace it out I’ll post.

 

I received the switch today.I removed all the wires.So I found  the M terminal magnito was wired into the rectifier🤷‍♂️ but the the two wires coming out of the stator weren’t hooked up just dangling.

I know the stator still works at least.When I rebuilt the motor I tested the leads coming out wile it was running.

 

One question.Will a weak ground cause the starter to turn slowly?

I hook up the switch temporarily  just too see if she would turn over, it did but slowly. 

I had the switch out of the dash and just laying on top of the tower.The battery reads 13v.