Sandy asked ... Replace vertical gear on Singer Fashion Mate 252?    |    Blaablaa asked ... How can I fix?    |    pete asked ... Flymo 330 turboglide?    |    keith asked ... Fuseboard( s) location of renault trafic t1100 1993?    |    Janet asked ... Neff B1641 door not closing at top?    |    Click here to ask your question

how to stop water overflowing from concealed cistern?

I have toilet appliance (N313253F317) with fill valve (NJ313). According to the instructions an adjustable screw bolt can be used to adjust the water level. The cistern was installed about 2 years ago and the water level was OK, but it has now started overflowing and movement of the adjuster has no affect. Any suggestions?
Don, May 2013