How To Replace a Booster Pump


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A booster pump supplies high-pressure water to a pressure side pool cleaner to optimize cleaner efficiency and performance. The pump is not self-priming and should only be used when the pool pump is on. Running the booster pump without the pool pump will damage it. This video will show you how to replace a booster pump.

Click here to view the Polaris Booster Pump. 

Things You'll Need


Socket set

Sharp knife/blade

Conduit fitting (if needed)


Step by Step


Step 1

Be sure to turn off power to the pool pump and booster pump. Close any valves before where the hoses are connected to the plumbing. This will prevent loss of water when you disconnect the hoses.

Click here to view ball valves.

Step 2

Remove the retainer clip rings from the intake and discharge hose. You should be able to push the clip off. If it is difficult to remove, you can use a flathead screwdriver to push it off.

Step 3

Once you remove the clips, push the sleeve down towards the PVC fitting then pull the hose off. Place the hoses aside.

Click here to view the Quick Connect.

Step 4

Remove the bonding wire from the motor (if you have one).

Step 5

Next, remove the back cover that houses the wiring.

Step 6

Once the cover is removed, loosen the ground screw to remove the ground wire. Next, remove the 2 additional lines (colors may vary).

Click here to view the Polaris Booster Pump. 

Step 7

Once the wires have been removed, slowly pull the wires out of the conduit fitting. Then remove the conduit fitting (if you are going to re-use it on the new pump). Now the booster pump can be removed.

Step 8

Next, we will install 2 new quick connects on the new booster pump. Be sure to install the retainer clip onto the soft tube fitting before installing the fitting onto the pump.

Click here to view the Quick Connect.

Step 9

Once you have installed the retainer clip, apply a bead of silicone onto the threads of the fitting then install it onto the pump. You can use an adjustable wrench to tighten the fitting. DO NOT overtighten.

Click here to view RTV silicone.

Step 10

With the fittings in place, you can place the booster pump in a position to be wired and plumbed in. You can use the other 2 quick disconnects to replace the older fittings in the plumbing (hopefully they are not glued in).

Click here to view the quick connect install kit.

Step 11

Use the old hose that was placed aside to measure the the hose lengths needed to be cut. I would recommend using a sharp knife or blade to get a smooth edge.

Step 12

With the new pump and fittings in place, connect the new hoses to the intake and discharge. If the new hose is difficult to slide over the fitting, try using some soapy water. Once the hose is on, pull up on the sleeve and insert the retainer clip.

Step 13

Once you are done with the hoses, remove the back cover on the new motor to expose the wiring terminal.

Step 14

The new motor has a protective plug on the side that needs to be removed so that you can wire it.  Remove the cover and install the conduit fitting on the new motor.

Click here to view the Polaris Booster Pump. 

Step 15

Feed the wire through the conduit fitting.

Step 16

The pump comes factory wired to 230v. If you have 115v, follow the wiring diagram on the motor label to change it to low voltage. Please refer to your motor label wiring diagram to wire your motor correctly.

Step 17

We are connecting to 230v so we will not need to re-wire the motor (motor is pre-set to 230v) We are going to connect our “hot lines” to line 1 and line 6 and to the green screw for ground.

Step 18

Once the motor has been wired, replace the back cover and reconnect the bonding wire.

Step 19

Open any valves that you closed.

Click here to view ball valves.

Step 20

You are now ready to turn on the booster pump. Your pool cleaner should be up and running again. If there are any leaks or issues, retrace your steps to isolate and correct the issue.


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 Posted: 6/20/2019 

How do I wire a booster pump to a t104?

InyoPools Product Specialist  Posted: 6/20/2019 

The following guide shows you how to install and wire equipment to the Intermatic T104: How To Install an Intermatic T104 Timer

 Posted: 11/26/2017 

Luciano - Q1- Not sure what you mean by two pairs of flat connectors. Could you contact one of our service reps at 407-834-2200 and maybe send them a picture. Q2- If you are wiring for 230V either wire can go to either terminal. For 115V, please check with our rep. Q3 - You should have a wiring diagram on the motor label that shows how the motor is wired for 115V of 230V. If the diagram is confusing, Please talk to our rep.

 Posted: 11/21/2017 

Hi, I was following the instructions and ran into a few questions: 1- I purchased a Waterway booster pump and there are two pairs of "flat" connectors to the two lines/wires. Each pair resembles a regular male plug The old pump had a single connector for each wire (black/red) so not sure if plugging each line/wire to only one of the connectors will work. The connector that goes on top seems to be a double female "insulated spade" connector, while the one I have currently is a single connector. I googled and searched Ebay and can't seem to find a connector that fits into this "new" plugs in the Waterway. 2- Old pump had Black wire on connector A and White wire on connector B. Waterway pump us numbered 1 and 2. Is it safe to assume A equals 1 and B equals 2 or manufacturers don't observe a standard for these wires? 3- how can I tell if current pump is wired for 230V or 115V? Thanks in advance for any help you may offer.

InyoPools Product Specialist  Posted: 3/13/2017 

Rookie1 - We need more information on your system. Please give one of our service reps a call at 877-372-6038 or 407-834-2200.

 Posted: 3/11/2017 

Installing an EcoStar and am looking for a work-around for the booster pump and separate timer. I do not want to assume syncing the electronic and dial diners will always work. Is it possible to change the booster pump to a waterfall pump line if it is self priming? What is the minimum self primimg pump size for the booster pump to operate properly without burning up?

InyoPools Product Specialist  Posted: 3/1/2016 

F.G. - Unfortunately we do not have any specific information for rewiring the pump for 115V. There should be instructions on the motor plate. If not, give the manufacture a call. Their technical staff should be able to help you.

 Posted: 2/29/2016 

How do you rewire the pump for 115W Thank you, F.G.