The manual flush on my Thetford CW200 has lost its humph, when flushing it only delivers about half the water and at half the pressure. The flush handle offers little or no resistence when pressed down. Its only 18 months old and has been looked after properly. The dealer says they have never had a problem like this on any other Thetfords.Can anyone offer any suggestions as to what might be the problem.
Regards Jim
Regards Jim