Question about Polaris 3900 Sport Pool Cleaner ()
Check the float on the back of the machine. Mine was full of water. As soon as I replaced it , everything ran perfectly again.
I tried every possible 'obvious' solution, from new wheel bearings to a new chain tensioner-thingie. You will notice that there is actually relatively little room for the chain to slip off the drive gear.
Seems that this additional weight a) turns the float into a sink and b) provides enough drag to force chain slippage.
After replacing the float, everything runs perfectly again. Of course, our friends at Polaris have now decided that you cannot simply buy a new float. You have to buy the ENTIRE BACK, paying 90 bucks for something that should cost no more than 10 - 15! Scoundrels.
Posted on Jul 01, 2012
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Posted on Jan 02, 2017
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