My c200 cw hand pump seems to have lost pressure and does not supply enough water, when pulled to the top position and let go it sinks to the lower position, no apparent leaks and previously worked very well. quicker pumping action does not improve the flow

ian cameron, September 2008

Don't know but you could contact www.thetford.com and ask what might the prob be. You can also see the PARTS list [better drawings than the manual as it lists and names all parts] un-fortunately doesn't show the manual pump/flush.
Click parts on home page select permanent toilets from the dropdown menu. Select your model [middle picture 3rd down] up comes the exploded veiw of the toilet and below is the parts list name and numbered.
Worth saving to file for reference and better than manual picture.

bob, September 2008