Maytronics Yellow Track, 9985050

This is the genuine Maytronics yellow track, part 9985050, for the Dolphin Diagnostic Advantage robotic pool cleaner.

What a worn track looks like

Tracks are the only thing holding a robotic cleaner to the pool surface. As the tread wears smooth and the material stretches, the cleaner starts sliding instead of climbing, stalls partway up the wall, or wanders off its pattern and misses whole sections of the floor. The motor and the pump can be perfectly healthy while the cleaner performs badly, because the grip has gone.

What you get

One yellow track, the Maytronics factory part. A cleaner runs one on each side and they wear at much the same rate, so it is worth looking at both before ordering.

Fitting

The track lifts off the drive and idler wheels and the new one goes back on the same way. Take the chance to clear grit and hair from the wheels while the track is off, since debris packed around the axles will chew through a new track much faster than normal use.