Vacuflush clog, not your usual issue, can anyone help?

[Darrenfon]

Try using a shop vac from the vacuum pump side and suck it through. My dock neighbor did this and it fixed it for him. Your issue may be different but it’s worth a try..

On my 2000 340 I used this tool. Added a valve to the end of a water hose with dock pressure, turned on the vaccuflush, pressed the foot pedal down and then turned the valve on the hose. The rubber expands blocks the head and also pushes water thru the system. I would only turn it on for a few seconds but ti always worked great and cleared the system.

https://www.acehardware.com/departments/plumbing/drain-openers/plumbers-snakes/43989View attachment 8654347

Awesome work guys. The combination of your two suggestions worked a treat!!! I’m back in business. That drain cleaner will stay on board with us.