Try removing the hose clamps, carefully pull the flow meter from the pipe, carefully remove the red plug, invert the meter to shake the indicator out. It looks to have a bit of debris caught in the tube. Run a bit of water down the tube to clean it out, replace the indicator and plug. If you have a bit of silicone sealant, use it to help re-seal the casket and reinstall the meter facing the proper direction (arrow). Whole job should take 15 minutes and may say a few hundred dollars.
