My Tsurumi pump has had a faint buzz since I put it back in in March. It is not even one year old yet. Today it tripped the breaker 3 times.
My first one was 1/2 HP and lasted 5 or 6 years. I went to 1 HP so it didn't have to work so hard and it went in the first year. Now this one won't run.
Tsurumi replaces them for free up to two years from purchase but I think they are just junk now!
About to put my third pump in in two years. Not happy!

Mike K

Even the best of pumps require maintenance. A pump that begins to buzz is telling you something is impeding movement. While it might be an electrical problem or bearings, you can't tell unless you dismantle it and see if something is wrapped around the impeller shaft or if there is something jammed in the casing around the shaft. This is like running the car engine as fast as possible while standing on the brake.

You don't need to open the motor. That is permanently sealed. just remove the cover around the shaft and check to see that the shaft and the well around it is clear. Once I found long blond hair that I had to cut with an Exacto knife( I have short red hair) and another time it was leaf debris and small gravel from a pot the raccoons had dumped in the water. This year I am fighting a squirrel that likes the quilt batting filter material. I think he wants it for his nest. Small pieces are sure to wind up around the impeller.

It's always a surprise what turns up. I regularly check it every year and anytime the water flow seems to slow or if the pump feels warm or noisy. It should just hum at the most.

Thanks...good information. I'll go take it out now :)