Jackson dishwasher wash arms do not rotate even though water is spraying.

Safety first: Disconnect power before removing spray arms.

• Clean jets thoroughly: Remove spray arms and clean every jet. Ensure opposite jets are clear to provide balanced thrust.
• Inspect bushings and hubs: Replace worn or ovalized bushings that allow arms to sag and rub.
• Check clearance: Ensure racks and tall items do not interfere with arm rotation. Adjust loading practices.
• Verify wash pressure: If arms still do not rotate, check wash pump performance and inlet screens for restrictions.

Spin arms by hand after reassembly to confirm free rotation.