Before dismantling the old toilet, turn off the water at the mains by locating the stopcock and turning it clockwise.

Use a cup, sponge or towel to remove as much water as possible from the toilet bowl and cistern. Have a bucket to hand to collect the water.

Remove the screws from the base of the toilet and from inside the cistern if it is attached to the wall.

Gently detach the old toilet from the waste pipe. You can push a cloth into the pipe to help stop smelly gases from spreading.

Assemble and fit the flush mechanism and inner parts of the cistern. Follow the manufacturer’s instructions and don’t over-tighten any fixings.

Attach the close-couple washer to the top of the pan. Then, carefully lift the cistern into position, making sure that the flush mechanism thread fits into the washer and that the bolts sit comfortably through the holes in the pan.

Align the waste pipe to the pan connector and attach, making sure the pan goes right into the connector collar.

Use a spirit level to check that the cistern is level. If your cistern has fixing holes in the back, mark the position of the fixing holes onto the wall with a pencil.

Use a pencil to mark the outline of the toilet pan onto the floor. Then, mark the position of the fixing holes.

Slide the toilet out then use a cable and pipe detector to make sure all the fixing points are clear of any obstructions.

Drill your pilot holes then, use a 10mm drill bit to finish the holes. If you are fitting the toilet to a concrete floor, you will need to use a masonry drill bit and wall plugs.

Put the toilet into position and secure the pan to the floor brackets with the provided fixings. Follow the manufacturer’s instructions and don’t over-tighten the fixings.

If your cistern has fixing points, secure it with appropriate wall plugs, fixings and screws. If it doesn’t have fixing points, secure with silicone sealant or adhesive.

Apply some PTFE tape and reconnect the cold-water supply. Depending on the position of the inlet on the new cistern, it might help if you use a flexible connector., ideally one with a small isolation valve.

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Turn the water on and check for any leaks along the pipes and seals. If your stopcock isn’t situated near the bathroom, ask a friend to turn the supply back on whilst you watch for leaks.

Finish fitting the flush mechanism as per the instructions and then secure the cistern lid before testing the flush.

Finally, apply some more silicone sealant to the base of the toilet, smoothing it down with a damp sponge for a clean finish.

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