Leaking Overflow - Help Needed - DIY Newbie!

[fman905]

Hi all. Hoping you can help me here. Total DIY virgin so please be gentle!

Our overflow pipe is leaking outside leading from our cistern. The cistern houses a plastic arm attached to the ballcock, and the system is is less than 20 years old (house built approx 1990 - we've been here 5 years.)

After some advice on how to stop the water pouring out. Any help appreciated.

Thanks.

 

[seco services]

does the water stop filling the cistern if you lift the ball up ?

 

[jackecole]

if as above it does, change the ball, if not, then the diaphragm is not shutting off properley... so change!