A.O. Smith 1 HP Full Rated North Star Replacement Motor - SN1102



Part # SN1102

By A. O. Smith

  4.84 Average  



Part # SN1102

Alternate Part #'s 187630, 193221, 193684, ESN1102, SN1102, SP1610Z1BNS, SP1610Z1BNSC, SPX1610Z1BNS

Product Description

Full rated 1 HP motor; 3450 rpm, 208-230/115; 8.5-7.8/15.6 full load amps; 1.85 service factor; 56J frame

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
1 HP SN1102 & SP1610Z1BNSC Replacement Pool Motor
1 HP
3450 RPM
208 - 230/115 V
8.5 - 7.8/15.6 amp
Service Factor:
Total HP:
1.85 HP
Stock #:
SN1102 or SP1310Z1BNSC
Dimension Letter:
13.35 in.
Commonly Used On:
Hayward Northstar Pump

?     Asked on 5/1/2017 by JERRY

Would your pool motor hum if the start capacitor or start switch is bad? If so how do you test the capacitor or switch?

A     Answered on 5/2/2017 by Stacey M.

Hello Jerry, we have a lot of videos on replacing the capacitor, but none of testing capacitors.  Humming from the motor is because the capacitor has gone bad. If you would like to see How To: Replace Your Pool Pump's Capacitor or Poolside Chat Episode 42: Pool Pump Motor Capacitors.

?     Asked on 1/9/2017 by John Crawford

To remove the impeller,does it come off clockwise or counterclockwise

A     Answered on 1/9/2017 by Lennox H.

Hi, John. To remove the impeller from the motor shaft you will need to rotate it counter clockwise.

?     Asked on 8/28/2016 by Robert Naylor

Hi, I have a Hayward Northstar Pump Assembly for my inground pool. Is the SN1102 the correct replacement motor for this unit. The original AO Smith Century motor says SP1610Z1BNSC on the data plate. Thanks.

A     Answered on 9/1/2016 by Scott W.

That would be the correct replacement, but you could also go with part number 5112-052.

?     Asked on 7/31/2016 by Kirk

I replaced the capacitor and rebuilt the pump just 2 months ago and was working better than ever but the motor just started screaming yesterday. I can only guess the it had overheated when I had the initial issues and now the bearings are shot. My plan is to go ahead and replace the motor. Well I need a new tune-up kit or well the one I just installed be fine? Thanks

A     Answered on 8/4/2016 by Lennox H.

Hi Kirk, You will not need another tune up kit if it's only 2 months old but I would recommend getting another shaft seal just to be safe.

?     Asked on 3/7/2016 by Brandon

What is the warranty on motor. SN1102

A     Answered on 3/7/2016 by Lennox H.

Hi Brandon, This comes with a 1 year manufacture warranty.

?     Asked on 2/1/2016 by

My pump is a Hayward Northstar SP4007X10NS. Is this the correct motor replacement? Also, which go-kit do I need for this pump?

A     Answered on 2/2/2016 by Andy O.

Bary- The replacement motor for your model pump is the USN1102 A.O. Smith 1 HP Up Rated North Star Replacement Motor. As for the go-kit we would need to know what year the pump was installed.

?     Asked on 1/18/2012 by Guest

I'm trying to find a replacement motor for my pool pump but my model number doesn't match what you have listed as the model number. My model number begins with a C48 and yours begins with an SP. Please help.

A     Answered on 1/18/2012 by Patrick P.

What we have listed on our chart pages is the pump model number. The model number you have will just identify the motor. If you look on the plastic housing on the pump there should be a sticker which will have the pump model number. You can usually find this by the discharge port on the pump. Once you locate it you can choose the correct replacement motor. Be certain to change the shaft seal and gaskets as needed. You can use our >How to guide if you need help. 

?     Asked on 1/12/2012 by Guest

Why should I purchase a Tune Up Kit?

A     Answered on 1/12/2012 by Patrick P.

A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.

?     Asked on 1/12/2012 by Guest

Why do I need to purchase a new shaft seal?

A     Answered on 1/12/2012 by Patrick P.

We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.

?     Asked on 1/11/2012 by Guest

What is Service Factor?

A     Answered on 1/11/2012 by Patrick P.

Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.


Review Summary

  (Average 4.84 out of 5 stars)
6 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

129     7

 (5 out of 5 stars)  Excellent Pump Moter Replacement

from Clarence, NY ()

Pros: Awesome fit - excellent replacement

Cons: none

Tip to get the impeller off the old pump moter: use a 7/16" open ended wrench - it slides in near the capacitor on the electrical side... rotate the impeller until the wrench slides into place at the end of the shaft and then one person holds the motor and the wrench while a 2nd person loosens the impeller off with bare hands by turning the impeller counter clock-wise.

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The Most Recent Reviews

 (5 out of 5 stars)  Perfect Match!!

from Bay Area ()

Pros: website, delivery, product selection

This motor is the perfect fit for my Hayward Northstar 1HP Pump. I had to get the Impeller kit with the pump seals as my old impeller would not come off. I had to use a metal grinder on a rotozip to cut the impeller off so I could reuse the motor mount and the seal plate from my old motor. INYO delivered the motor, Next Day, for me so I could get the motor installed and my pool back in shape. Great Service!!

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1     0

 (5 out of 5 stars)  

from Dallas, TX ()

Pros: Easy to install and very good price

Great match to original motor and easy to install.

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 (4 out of 5 stars)  

from Dallas, TX ()

Pros: Does what it needs to do.

This motor was exactly what I needed for my pool, and much cheaper than what I could purchase locally. The first one I ordered broke down after a few months, so I am hoping this one is more reliable. So far so good. Also, INYO sent me this new motor at no additional charge.

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 (5 out of 5 stars)  Great product easy to install!

from Murrieta, Ca. ()

Great product and was easy to install! Shipping was fast and well packed!

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 (5 out of 5 stars)  

from Roseville, CA ()

Pros: OEM replacement, good price

Cons: Had to buy whole impeller kit to get shaft seal.

Great delivery. Ordered Labor Day (Monday) and it was delivered Wednesday. Installed easily. Good website. I had problems on other sites trying to determine what motor and parts I needed. Inyo site was clear and easy.

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