All the flush valve kits available at Cashbuild come with easy to follow step-by-step instructions

Replacing a flush valve is usually a standard task, whether you're dealing with an old-fashioned tank or a state-of-the-art new design. An average DIYer can replace a flush valve in about an hour with basic tools and minimal fuss.

You'll need

The replacement valve, a cloth, new tank-to-bowl gasket.

Step 1: Get ready

Lift the cover of the toilet cistern and carefully put it down where it won't crack or break. Turn off the water supply to the toilet by closing the tap on the wall behind the toilet. Flush the toilet to drain the water from the cistern. Use a cloth to absorb the remaining water at the bottom.

Step 2: Get set

Unclip the old valve assembly (2) from the base. While you're at it, check the tank-to-bowl gasket – often the cause of that annoying drip after flushing. Replace it if necessary.

Step 3: Get wet

Clip the new valve assembly in place onto the cistern outlet. Do not adjust the overflow stem (3) yet. Reopen the wall tap and allow the cistern to fill up to the nine-litre level. Then adjust the overflow stem (3) until the underside of the top bracket (4) touches the water. Turn the overflow stem anti-clockwise to lock it.

Step 4: Refit

Reattach the adjusting rod (5) to the top bracket. Carefully replace the cistern cover.

These instructions are for a nine-litre flushing system. If you have a six-litre flush, simply adjust the inlet valve float to fill to the six-litre mark but leave the overflow stem (3) set at the nine-litre mark.

Important Ensure that a six-litre bowl is fitted when using a six-litre cistern.

Visit your nearest Cashbuild store for more helpful tips on the right product for you. Cashbuild stores are conveniently located throughout Southern Africa. For queries or to find your nearest store call the Cashbuild Share call number 086 0100 582.