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Allis Chalmers 720
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Dusty MI View Drop Down
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Joined: 13 Sep 2009
Location: Charlotte, Mi
Points: 5058 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dusty MI Quote  Post ReplyReply Direct Link To This Post Topic: Allis Chalmers 720
    Posted: 25 May 2023 at 3:58pm
 I've got an Allis Chalmers 720 garden tractor with a loader on it, it will not start. Checking it over I found that the Ignition Switch is shot. I just came from the local A.C. dealer and found that that switch is not available and is no longer made, the Part Number is 2171491SM, if I remember right that is a Simplicity number. Anybody on here have that switch?  It has 5 blades that a 5 wire plug plugs into it, 1 blade is power, another is start, and another is run, the other 2 go to Battery & Accessories. 

 Anyone happen to have a switch like that? 

 Thanks,
 Dusty
917 H, '48 G, '65 D-10 series III "Allis Express"
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DSeries4 View Drop Down
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7434 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2023 at 4:12pm
It is pretty much a regular Indak key switch.  I got mine from Sandy Lake a few years ago.
'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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AC720Man View Drop Down
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 5131 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC720Man Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2023 at 6:19pm
Sandy Lake or Steve@B&B custom circuits will have it.
1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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jvin248 View Drop Down
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Joined: 17 Jan 2022
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Points: 421 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jvin248 Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2023 at 5:12am
.

I gave up on the typical switches like that.

I found a better sealed boat switch to put on my Ferguson. Do an Amazon search for boat switch and you should find something that matches.

.
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tadams(OH) View Drop Down
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Joined: 17 Sep 2009
Location: Jeromesville, O
Points: 10622 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tadams(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2023 at 2:31pm
 I got mine from Steve at B&B for my 4041 
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AC720Man View Drop Down
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Joined: 10 Oct 2016
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Points: 5131 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC720Man Quote  Post ReplyReply Direct Link To This Post Posted: 27 May 2023 at 10:39pm
I have never had one go bad in 35 years, replaced one when I restored my 720 10 years ago just because I upgraded the entire electrical wiring. It was involved in a fire on the deck that caught grass clippings on fire that melted the wiring harness. Thankfully the fire was put out quickly and the wiring and belts were the only damage. Maybe I have just been lucky.
1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Dusty MI View Drop Down
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Joined: 13 Sep 2009
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Points: 5058 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dusty MI Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2023 at 7:38pm
  I can not find that Switch #2171491 SM. I've been searching the Internet, and find after market ones and go and try to order one, then it comes up, no longer available. Why/what was it so special?   

 Any chance any of you guys have a good one, new or used.  Simplicity #2171491SM
917 H, '48 G, '65 D-10 series III "Allis Express"
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Dusty MI View Drop Down
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Joined: 13 Sep 2009
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Points: 5058 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dusty MI Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2023 at 8:06pm
 I should add that this is for a D-10 series III.   

  I'm wondering why there are so many different Ignition Switches for the D-10 tractors. 
917 H, '48 G, '65 D-10 series III "Allis Express"
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AC720Man View Drop Down
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Joined: 10 Oct 2016
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Points: 5131 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC720Man Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2023 at 9:36pm
Contact Steve in NJ, he is a member on here
1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Dusty MI View Drop Down
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Joined: 13 Sep 2009
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Points: 5058 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dusty MI Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 2023 at 11:45am
Originally posted by Dusty MI Dusty MI wrote:

 I should add that this is for a D-10 series III.   

  I'm wondering why there are so many different Ignition Switches for the D-10 tractors. 

  NOT D-10 s III.

  720 Garden tractor with a 700 loader.  It appears that switch is no longed made by anyone.

  Anyone have a garden tractor with a loader for sake?
917 H, '48 G, '65 D-10 series III "Allis Express"
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tadams(OH) View Drop Down
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Joined: 17 Sep 2009
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Points: 10622 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tadams(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 2023 at 2:57pm
 Check with Steve at B&B he had some made
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Dusty MI View Drop Down
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Joined: 13 Sep 2009
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Points: 5058 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dusty MI Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jun 2023 at 1:12pm
 It was not the key starter switch, but the starter motor relay. Put a new relay on, and turned the key, engine turned over and started. 
917 H, '48 G, '65 D-10 series III "Allis Express"
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