How do I properly maintain the water supply hoses?

You should only use the new AquaShield water supply hoses shipped with your washer and never reuse old hoses. Ensure that rubber washers are in place at both ends of the hoses to prevent leaks. The water supply hoses must not be kinked, bent, or pinched as this can cause damage or restrict water flow. Check fill hose connections regularly to ensure they are tight and not leaking, and periodically inspect the hoses, replacing them with new ones if cuts, kinks, or leaks are observed. Make sure the water supply faucet is easily accessible and turned off during extended periods when the washer is not in use.

From the official Bosch WAW285H1 EcoSilence Front Load Washer manual, page 15

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