By Century Motors



Part # STS1072R

Warranty 1 Year

Alternate Part #'s 109130, 14971, 177099, 177100, 177103, 177104, 190065, 190095, 190130, 190146, 5KC39UN2942AX, 5KC39UN2942X, 8-177103-02, C1110, C48K2N131, C48K2N133, C48K2N134B1, C48K2N135, C48K2N139, C48K2N144, EB973H, JH75FL2, STS1072R, AOS-60-5226

Product Description

This motor is no longer available to order,

Voltage 230, High Speed HP = .75 Low Speed HP = 1/6, Dual Speed, Round Flange, RPM @ High Speed = 3450 RPM @ Low Speed = 1625, Threaded Shaft, Frame = 56J Used on the following Dual Speed pump models: Hayward Max Flow, Hayward Super Pump, Hayward Super II, Hayward Northstar and Jacuzzi Magnum pumps. 


Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
0.75 HP STS1072R & STS1072RV1 Replacement Pool Motor
75/ .10 HP
3450/1725 RPM
230 V
5.4/2.2 amp
Service Factor:
Total HP:
1.13 HP
Stock #:
STS1072R or STS1072RV1
Overload Protector:
Dimension Letter:
12 - 1/8 in.
Commonly Used On:
Hayward Max Flow, Hayward Super Pump, Hayward Super II, Hayward Northstar and Jacuzzi Magnum
California Title 20 Compliant

?     Asked on 1/11/2012by Guest

What is Service Factor?

A  Answered on 1/11/2012 by InyoPools Product Specialist 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.

?     Asked on 1/12/2012by Guest

Why do I need to purchase a new shaft seal?

A  Answered on 1/12/2012 by InyoPools Product Specialist 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 1/12/2012by Guest

Why should I purchase a Tune Up Kit?

A  Answered on 1/12/2012 by InyoPools Product Specialist 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 1/18/2012by Guest

Can you direct me to the proper hi low switch for this motor?

A  Answered on 1/18/2012 by InyoPools Product Specialist Patrick P.

Unfortunately the manufacturer does not offer the switch for the 2 speed 220v motors any longer. If you already have a 220 volt timer (on/off) you would need an Intermatic T106R to switch from high to low speed. If you do not have a timer currently you would need the T10604R which is a 220v on/off timer and a high/low timer.

?     Asked on 1/18/2012by Guest

How can I tell whether or not my motor is a dual or single speed?

A  Answered on 1/18/2012 by InyoPools Product Specialist Patrick P.

Most dual speed motors will have a toggle switch that will allow you to adjust the motor speed to either high or low. Another way to tell if your motor is dual speed is by looking at the RPM's on the motor specifications label. If there are two RPM's listed such as: 1725/3450 then motor is dual speed. If there is only one RPM, then motor is single speed.


Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Pliers, Socket Set, Wrench Set

Pump motor was making a terrible screeching noise.

Written on 6/15/2017 by Guest

Repair was pretty easy to do. I removed the old motor and all associate parts. I replaced all the seals and gaskets. I replaced my old motor with a dual speed motor so I had to wire in the switch. That took a bit longer than expected, but looking back it wasn't too difficult. Just make sure you read all the instructions. The picture was a little misleading. I put it all back together in reverse order of the tear down. I did have one question on the shaft seal. There was a metal collar and gasket on the old motor shaft. I called inyopools and they had an answer for me in about 10 seconds (remove both collar and gasket and replace with new shaft seal). Their customer service is top notch.

Were these instructions helpful? 


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