From my polaris manual
For proper operation, the wheel RPM should be
between 28 and 32.
If the Polaris is operating below 28 RPM:
• Remove the universal wall fitting by
attaching the quick disconnect. Pull it
away from the pool wall as you unscrew
the universal wall fitting.
• Push the blue restrictor out of the universal
wall fitting.
• Reinstall the universal wall fitting.
• Recheck the wheel RPM.
If you still have less than 28 RPM:
• Clean the filter screen in the quick disconnect. A dirty filter screen will restrict the
water flow from the pump to the Polaris.
• Check the hoses, connections, and swivels
for leaks that could cause loss of water
pressure.
• If there is a gate valve installed on the
booster pump or the Polaris cleaner line,
open it completely so water can flow freely
to the Polaris.
• Clean the skimmer and pump baskets.
Please Note: If the above suggestions do not
work, contact our Customer Service Department
at 1-800-VAC-SWEEP (USA and Canada only)
also check your wheels, mine get slick and have no grip and then get stuck.