We have a Polaris cleaner in our pool, not sure of the exact model. I thought it was a 360, but it has a booster pump, and it does not have that extra little drive wheel that I see on the pictures of the 280. It doesn't quite match the picture of 380 on the Polaris website, but that may be simply because of model year differences. Serial number is K555226 if that helps any.
Right now if I turn the booster pump on, it just does donuts, or runs around in circles, mostly in the deep end. It does seem to do an OK job of picking up stuff in the small area that it covers, but it isn't getting most of the pool. The circles are all with the dual wheels on the inside, and the single wheel outside.
Pulling the unit out of the water with the pumps off, I found that the single wheel was reasonably stiff to turn, and definitely sounded like it was driving a transmission.
The two wheels both spun fairly freely, with no sounds like they were connected to anything, and they were not connected as each would stay still while I spun the other.
Any ideas as to what might be wrong?
Also, the velcro on the collection bags is getting really weak, and doesn't seem to stay closed very well any longer - do they make zipper replacement bags for all the Polaris models?
Another problem I've had is that the black "scrubby pad" on the end of the tail seems to wear out incredibly fast on our unpainted gunnite pool surface, I go through several in a season. Any suggestions for longer wearing alternatives? I've thought of trying to put one of those plastic pot scrubber pads over the tail to see if that would last better - good idea or bad?