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Yellow is the current setup
Should the hose be shortened/rerouted? I'm thinking it would have a hard time draining properly, and I believe my washing machine has issues rinsing. Could this be the cause?
I was thinking of changing it to closer match the original drain hose in the diagram.
I would agree the extra loop will create increased resistance and possibly not pump as well.
I would shorten the hose if nothing else to reduce the back pressure on the pump.
I know my washer has a check valve at the exit of the pump so it should not let dirty water flow back but I would think eliminating any flow restrictions and a longer hose is a resistance to flow that if eliminated may solve your rinse issue.
