Part # B849
Warranty 1 Year
Century 1.5 HP Pool Pump Motor – B849
Full Rate | Single Speed | Square Flange 56Y Frame
✅ Features & Benefits
✅ Genuine Century (A.O. Smith) replacement motor – Model B849
✅ Horsepower: 1.5 HP (Full Rate)
✅ Frame: 56Y square flange | Shaft: Threaded
✅ Speed: 3450 RPM (Single Speed)
✅ Voltage: 115/230V dual voltage
✅ Built with Open Drip Proof (ODP) enclosure for reliable cooling
✅ Rugged construction for long service life in pool environments
➡️ Strong & Reliable Motor Replacement
➡️ The Century B849 delivers full-rated 1.5 HP performance, making it a trusted replacement for inground pool pumps requiring a 56Y square flange motor.
⚠️ Tech Tips & Cautions
⚠️ Not compliant with California or New York Title 20 energy efficiency standards
⚠️ Confirm motor specifications (HP, frame size, flange style) before purchase
⚠️ Always replace the shaft seal or tune-up kit when installing a new motor to prevent leaks
⚠️ Ensure correct wiring for 115V or 230V setups before operation
⚠️ Disconnect power supply before servicing
Dual Speed Option: (Not Compliant)
California and New York Title 20 Compliant Option:
What is Service Factor?
Reply
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.
Reply
I have the AO Smith Part #7-177896-22, HP 1.5, SF 1.50 and FR Y56Y. Recently it started making a very loud noise while it is pumping. It continues to pump the water for my pool, but makes this loud noise. Can the pump be repaired or does it need to be replaced?
Reply
Good afternoon Jim, Sounds like bearings. This is repairable but a little technical we do sell the bearings and have a how to guide on our site with a video. You can purchase the bearings also part#6203. I would recommend taking it to a professional motor repair shop if you are unsure.
Reply
Adam,
Thank you for your assistance. I think the best is for me to buy a new motor rather than tackle the bearings. Do I also need the repair kit which has the various O rings, etc. ?
Thanks,
Jim
Reply
Good morning Jim, Yes I would recommend replacing the seal and o-rings. The shaft seal is the most important but since you have it out you might as well replace everything. If you let me know what type of pump you have I can refer the correct kit.
Reply
Less than 1 hr
Screwdriver, Wrench Set
1 0
The Most Helpful Review
2 0
(5 out of 5 stars)
Reviewed By: GREENHORNET from Arcadia, Fl. ()
Pros: quick ship, installed same day, runs great, no surprises
Cons: none
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The Most Recent Reviews
1 0
(5 out of 5 stars) Replacement
Reviewed By: LJD1 from Lizella, GA ()
Great replacement pump motor - runs quietly - and was easy to replace - online tech helped me locate everything I needed
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