If the cleaner is not moving or cleaning up the dirt and debris efficiently like it was once before you may simply need to empty out the contents in the bag because it may be full. Compatible Model:For Polaris 260 480 9-100-1014.
3900 Double Pool Cleaner Bag with Zipper Enclosure,Wide Hook & Loop Closure SuperBag Compatible with 3900 Sport/P39/39-310 1. Fit Models：Pool cleaner bag is compatible with the 3900 Sport and P39, as well as models 280, 280 Tank Trax, 280 Black Max, TR28P, and 480 Pro cleaners.
What kind of bag do I have?. If the bag attaches to the column with a plastic clip with oval prongs, it is a 280 or 480. If the bag attaches to the column with a plastic clip with square prongs it is a 360 or 380.