Troubleshooting & DIY Repair

Start with the right decision This hub covers the Shurflo 4008 RV By-Pass Pump. If your pump is not a 4008, stop and use its own manual. If you need to… Use this section Find out why the pump is not building pressure Diagnose Sanitize a known tank size Maintain Check a planned install before…

Start with the symptom Pick the row that matches what your Shurflo 4008 RV pump is doing, run the first checks, and stop where the table says to stop. Pump will not start / blows circuit Pump will not start / blows circuit First checks: Electrical connections, 10 amp circuit, fuse or breaker, main switch,…