Polaris 280 wants to ride only on front wheels

[noelbowman]

A couple weeks ago I noticed that my Polaris 280 wants to ride on just the front two wheels. Well, on one side there is only one wheel, but I think you get the idea --- the rear most wheel rides up, not touching the floor. Of course this about kills its cleaning ability.

Any ideas?

I rebuilt it last summer - replacing all 3 wheels and gears. So most (jot all) of the internals are new (newish).

I spun the thing over and over to make sure there was not a bubble in the back causing it. You can push it flat by hand - but shortly after it slowly rises back up. It rises up even when the pump is off, so I think it is something with the polaris and not pump or water pressure? The rear nozzle is pointed almost straight up - thinking it would help push it down. But I have not felt the nozzle to see how much pressure is really coming out -- is this it perhaps?

Since I rebuilt it last year, I have no problems tearing it apart again and "eyeballing" it to see what is up -- but thought I would ask if anyone had any suggestions since I was not sure what I would be looking for this time. I searched previous posts - but did not see anyone listing this particular problem.



Thanks in advance,
Noel

[aquarium]

Hi Noel,

I have a 180 so it's a little different. Have you checked the white float to see if it's moved too far out from the unit? That would give it more lift. I usually have the opposite problem because those floats tend to crack along the inside seam, fill up with water, and then cause the unit to fall over on its side.

[noelbowman]

I did not even think about the float position. I made sure it was not messed up, etc - but did not even think about it being too far back. I will check that tonight. Thanks!

[noelbowman]

Checked the float -- it is OK. Great idea though, thanks. But unfortunately it is not the problem.

[aquarium]

Hmmm, one other thing to check is the back-up valve. If it's stuck partly open it could be pulling back on the cleaner unit.