Air leak specifically around the inflation valve; hissing sound at valve area.

Safety first: Deflate the spa partially before attempting to remove or tighten the valve.

• Tighten valve: Use the supplied valve wrench (if provided) to gently tighten the inflation valve body.
• Clean surfaces: If removable, unscrew the valve and clean both the valve and liner contact surfaces. Remove any sand or debris.
• Inspect O-ring: Check the valve O-ring for cracks or flattening. Replace if damaged.
• Reinstall and test: Reinstall the valve, reinflate the spa, and use soapy water to confirm the leak is resolved.

Warning: Do not overtighten the valve; this can damage the liner threads.