A failing pool pump motor can disrupt your pool’s circulation, leading to costly issues or cloudy water. Purchasing a high-quality, compatible motor from PST Pool Supplies ensures energy efficiency and long-lasting performance. This guide will help you as a pool owner with basic mechanical skills to select and install a new motor.
Why buy from us?
- Energy Efficiency: Our motors save on electricity bills with modern, efficient designs.
- Perfect Fit: Motors compatible with top brands like Hayward, Pentair, and Jandy.
- Reliability: Backed by a solid warranty for peace of mind.
Tools and Materials Needed
- Replacement Motor: Read our guide on How to Choose the Right Replacement Motor
- Screwdrivers: Phillips and flathead.
- Wrenches: Adjustable or socket wrench set.
- Pliers: Needle-nose and standard.
- Lubricant: Silicone-based for seals.
- Replacement Seals and Gaskets: Click here to find your pump's seals and gaskets
- Safety Gear: Gloves and safety glasses.
- Multimeter: For electrical testing (optional). Multimeter: For electrical testing (optional).
- Clean Cloth: For cleaning components.

Step-by-Step Instructions
1. Identify and Purchase a Replacement Motor
Check your current motor’s label for the part number (PART), catalog (CAT), or model number (MOD) and type it in the PST Pool Supplies search bar.

2. Purchase Replacement Seals & Gaskets
To find the right shaft seal and Go-Kit for your pool pump, follow these steps:
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Identify the Pump Make and Model:
Check the pump housing for a label with the manufacturer’s name, model, and model number. This is usually on the main housing. Common brands include Pentair, Hayward, Sta-Rite, or Jandy. If the label is missing, look for part numbers on components like the impeller, diffuser, or strainer lid, or take clear photos of the pump and contact a pool expert at sales@pstpoolsupplies.com
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Check Impeller and Motor Details: The impeller part number or motor specifications (e.g., horsepower, RPM) can help narrow down the correct seal. For example, an impeller like SP3021-C in a Hayward pump typically uses a PS-201 or PS-3868 for saltwater.
- Match to a Go-Kit or Seal: Use the pump model to find the corresponding Go-Kit or shaft seal. Go-Kits include the shaft seal, diffuser O-ring, housing gasket, and lid O-ring. For example
3. Turn Off Power
- Safety First: Switch off the pool pump’s circuit breaker.
- Confirm power is off using a multimeter or by ensuring the pump doesn’t run.
4. Drain the Pump
- Close pool valves to stop water flow.
- Remove the drain plug from the pump housing to drain water.
- Place a bucket underneath to catch residual water.
4. Disconnect the Old Motor
- Disconnect the motor’s electrical wiring. Take a photo for reference.
- Loosen the conduit or wiring cover to access terminals.
- Label wires (e.g., L1, L2, Ground) for easy reconnection.
5. Remove the Old Motor
- Loosen the bolts (usually 4) securing the motor to the pump housing.
- Gently pull the motor free, noting the impeller and seal orientation.
- Unscrew the impeller from the motor shaft (typically counterclockwise).
6. Replace Seals for a Leak-Free Fit
- Inspect the shaft seal and O-rings for wear. Replace with the new high-quality seals that you purchased from PST Pool Supplies.
- Apply silicone lubricant to new seals for easy installation.
7. Install Your New Motor
- Attach the impeller to your new motor’s shaft, securing it per manufacturer specs.
- Align the motor from our Shopify store with the pump housing and tighten bolts evenly.
- Ensure proper alignment to prevent vibrations.
8. Reconnect Electrical Wiring
- Reconnect wires to the new motor using your photo or labels as a guide.
- Secure the conduit or wiring cover tightly.
- Verify connections to avoid electrical issues.
9. Test Your New Motor
- Reinstall the drain plug and open pool valves.
- Restore power at the circuit breaker.
- Run the pump to check for leaks, noise, or vibrations. Our motors ensure quiet, smooth operation.
- If issues occur, recheck seals, wiring, or alignment.
10. Enjoy Your Upgraded Pump
- Once the pump runs flawlessly, secure all components and clean up.
- Enjoy the efficiency and reliability of your new motor from our Shopify store.
Why Shop with PST Pool Supplies?
- Save Money: Energy-efficient motors lower your bills.
- Trusted Quality: Our motors come with a warranty for lasting performance.
- Fast Delivery: Get your motor quickly to restore your pool.
- Shop now at our Shopify store for the best selection!
Safety Precautions
- Always disconnect power before working.
- Wear gloves and safety glasses to stay safe.
- Avoid running the pump dry to protect the impeller and seals.
Don’t let a faulty motor ruin your pool season! Visit our store today to find the perfect replacement motor and keep your pool crystal clear.
Disclaimer: If you’re unsure about any step, consult a certified pool technician to avoid injury or damage.