Why won't the adjustment knob turn on my Bowflex SelectTech 552i dumbbell?
- SstonerobertoAug 8, 2025
If the adjustment knob on your Bowflex Home Gym dumbbell won't turn while the handle is in the base, first ensure the dumbbell handle is fully pressed down into the base. If it's not, the locking mechanism might not release, preventing knob rotation. Also, check that no weight plates have been placed backward in the base, with the 'Locking Tab' facing the dumbbell handle grip. All weight plates should have the selection tongue facing away from the grip. Finally, inspect the dumbbell base for any dirt, debris, or obstructions. You might need to remove the weight plates to check this, ensuring you replace each plate in its correct location with the selection tongue facing away from the dumbbell grip.