This is a replacement for the large type pump motor used by San Marino from 1967 to 1979
This will also fit all Pontrelli fountains.

You will have to drill 3 new holes in your bowl, see instructions below.

Small wrench, slotted screwdriver, drill and 3/16" drill bit, and silicone adhesive.

After you install our adapter plate and screws you can just purchase our standard air cooled pump part number

Remove the old pump housing. You will have to reuse this part.

Remove impeller. It is pressed on and you will have to pry it off.

Try not to ruin the clear plastic disk, you will have to use this again too.

Remove the 3 nuts that mount the pump motor.
Find the wires from the pump motors and cut them about 3 inches from the wire nuts.
Remove the old pump and depose of it. It does contain oil.

Place the adapter plate on the bottom side of the bowl.

Install the 3 short screws and be sure the inner holes are rotated clockwise.

Be sure the smaller hole pattern are aligned as shown.

See they are slightly rotated in the clockwise position?
This is so the new pump will centered properly in the base.

Tighten the nuts firmly on the 3 short screws

Drill through the 3 center holes using an electric hand drill and a 3/16" drill bit.


We have the drill bits available.

Remove the adapter plate and deburr the new holes in the bowl using a larger drill bit on both sides.

Using clear 100% Silicone, apply it to the bottom of the bowl.

Smooth it around making a diameter that is about the same as the adapter plate.

Install the long screws in the outer holes and tighten the nuts on the long screws.

You can put the short screws through the holes to keep everything aligned.

The long screws will never be removed again so make them tight.

Install the short screws while the silicone is fresh.

You can use any of the old nuts you removed from the old pump.

Make sure all t he screws and nuts are tight.

The silicone should squeeze out from between the 2 plates.


NOW STOP AND ALLOW THE SILICONE TO HARDEN -- This usually takes 24 hours.

After the silicone will hardens in 24 hours remove the 3 short center screws.

Remove the oozing silicone from the inside of the bowl. After it is hardened it will pull off easily.

You do not to need to remove it from under the bowl but the face of the adapter plate needs to be clean.

Apply clear silicone to the face of the pump motor.

Spread it to coat the entire metal surface. Try to keep it off the center rubber seal.


A trick is to put a little Vaseline on the shaft and on the seal so the silicone doesn't stick to them. It doesn't take much and be careful not to get it on the face of the pump flange.

Install the motor into the bowl and tighten the screws tight. You will not remove them again, unless you need to replace the motor again in the coming years.

You should see silicone oozing into the center.

And you should see silicone oozing from the outside of the plates.
NOW STOP AND ALLOW THE SILICONE TO HARDEN -- This usually takes 24 hours.

After the silicone hardens remove the ooze from around the seal and shaft.

You may have to cut along the edge. Be careful not to damage the seal.

Clean any silicone that may be around screws and nuts.

Install your original clear plate and new impeller supplied in our kit.

Be sure and use the plate with the small hole on the bottom.

Some fountains had a plate with a small hole, about 5/8" diameter and a large hole about 1 3/4" diameter. Some fountains came with both plates having small holes.


Be sure the flat inside the impeller hole lines up on the motor shaft.

You will have to look inside the hole on the impeller to see the flat.
It's kinda hard to see but it is there.

Install your original pump housing.

We do not have a replacement for this part.

Now find the wires that you cut from the old pump.

The green wire from the old pump can be removed from the grounding screw that's soldered in the base. Be sure to leave the green wire from the power cord connected to the ground screw.

Remove one wire nut from one of the cut wires from the old pump.

Connect one of the wires from the new pump motor

Now remove the other cut wire and wire nut and connect the other wire from the new pump motor.

Make sure all the wire nuts are tight and no exposed wire is visible.

You should be good to go now.

I will be posting a wiring diagram shortly