I have the 165 but I think they are the same.
If the coverage of the pool is OK, then it's fine. But when it goes wrong it won't cover the pool--and when mine did that, it went into a tight spiral, locking the whole thing up. The internals of the floating piece needs to be replaced then. It looks like a giant, clear plastic mechanical bug.
What you should see, if you lift it out of the water, is it alternating jets, front and rear, in a random but even pattern All four jets should spray water equally hard, and they should all come on by themselves in turn (and sometimes together).
If that's OK, then replace the hose. Otherwise....call Polaris and ask them.
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