By Century Motors



Part # 5271-83

Manufacturer Code 1011431-001

Dimensions 9" L x 6" W x 6" D

Alternate Part #'s 10111431-001, 1011431001, 35-126-2082, AOS-601-6691, CRM1011431001

Product Description

End Cover Switch Assembly - 1011431-001

Metal end cover with toggle switch for 2-speed motors. Toggle switch provides Lo, Off, and High functions.

Directions for connecting 1011431-001 to AO Smith STS dual speed motors:

All references to terminals of the terminal board are in quotes

1. Remove and store black lead from the low speed terminal of toggle switch assembly. (this black lead may be scrapped or stored for later use if changing back to original setup).

2. Remove black lead from "A" and connect to low speed terminal of toggle switch assembly.

3. Remove yellow lead from "L1" and connect to "A" (where black lead was removed in step 2).

4. Connect yellow lead from hi speed terminal of toggle switch assembly to "A” on top of terminal board.

5. Connect purple lead from common terminal of toggle switch to "L1".

6. Before replacing motor canopy, be sure all leads are properly placed to prevent damage from governor and/or canopy.

7. Connect power to L1 and L2.Toggle switch will now control whether either high or low speed are used.


?     Asked on 7/21/2015by Inyo Visitor

Per your instructions for 1011431-001, step #1, there was no black lead from the toggle to discard and there is no yellow lead from the toggle for step #4.

A  Answered on 8/15/2015 by InyoPools Product Specialist Andy O.

The wiring instructions we have for the End Cover Switch Assembly (1011431-001) part # 5271-83 are directly from the MFG. I would contact A.O. Smith/Century if you need further instruction (800) 262-6484.

?     Asked on 3/19/2016by david

wiring switch 1011431001 to motor

A  Answered on 3/21/2016 by InyoPools Product Specialist Lennox H.

Hi David, You can find wiring instruction under the "Product Description" of this part page.

?     Asked on 10/31/2018by Rod Phelps

Does this end cap with switch fit the STS1102rv1 pump motor? I wish tech support had mentioned this part when I bought my pump motor!

A  Answered on 11/13/2018 by InyoPools Product Specialist Lennox H.

Hi, Rod. Yes, this is the correct End Cap w/ Toggle Switch for the STS1102RV1  motor. 

?     Asked on 10/3/2019by Dan Vanover

Do I need this switch assembly to operate the hi-lo on my tub controls

A  Answered on 10/3/2019 by InyoPools Product Specialist Steve M.

Dan, it depends on the configuration of your equipment. I suggest getting in touch  with our technicians for the best advice on this. Please send us a photo of your equipment configuration to upload@inyopools.com along with a brief description of the part you are looking for and our techs will advise. 

?     Asked on 10/8/2020by Jose Ocampo

Will this fit on B2981 Motor?

A  Answered on 10/9/2020 by InyoPools Product Specialist Hector F.

Unfortunately no, you will need part number 2512558-001 that you can view by clicking here


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Pliers, Socket Set, Wrench Set

I had a 2-Speed motor without a 2-Speed switch

Written on 7/15/2018 by Guest

After receiving a 2-Speed motor, I realized that the only ways to actually use the two speed capabilities was to install another timer unit or a manual switch. The switch was much more cost effective.

I am an avid DIY'r and have no problems digging into electrical as long as I get sufficient accurate information. This switch intimidated me a little, but I found complete step-by-step installation instructions on InyoPools.com.

I printed them out, took them to my workbench and followed them exactly. They were VERY clear and easy to follow. Before long, I had a fully functioning 2-Speed motor. Thank you InyoPools.

Btw, I also rebuilt my Hayward Super II pump and my Baracuda MX8 pool sweep using the same resources. InyoPools - you are awesome.

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