Toilet Issue

Model: 2005 Rinker Fiesta Vee has a Jabsco quiet-flush electric toilet, model 37245-series mounted. The issue is the rinse water supply features is not working very well when flushing. The PAR-Max 4 pump was replaced. The toilet will dispose the body waste, however, rinsing the bowl no water down pour. Can anyone provide a resolution to fix this? Or do the bowl needs to be replace?
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