Can I fix this bit of the toilet myself???

[BoBoo]

Aaaaaargh. Have one of those weeks. Noticed toilet was continuously running, opened the cistern and this bit of whatever the mechanism is called was fractured and then snapped with a bit of prodding. If I buy the parts 1. What is it called? 2. Can I fix myself? Have reasonable levels of competency and can follow instructions. Have turned water to toilet off for now and have plumber coming on Tues for other issue

I don’t know which bit is cracked, do you mean the siphon?

Get the plumber to do it!

In the short term, leave the lid off and jiggle the bit that lifts up when you flush, so that it sits back properly stopping the water draining all the time into the bowl.

Then ask @PigletJohn ....

search for flush cartridge or mechanism on screw fix. Look for similar things!

I bought three and returned two, as the length of the pipe underneath didn’t quite work.

It’s doable, but fiddly.

If it was my only loo I’d get a plumber to do it. We had a second loo so it was ok for me to spend a few days buying different kinds and trying to fit them.

It's the plastic stick linked to the big ball which makes a connection to switch off the fill tap when the cistern is full

Definitely check with Piglet John

I think you mean ball valve ( used to be ball cock). If you can measure the length of the arm and take the photos to your local plumber or screw fix etc. they will have some. It also appears to be called a float valve.
https://www.screwfix.com/c/heating-plumbing/float-valves/cat831620

Then look on you tube how to replace it. You may need to shut the water off first.

The flowmaster kit from screwfix is £15 ish and replaces everything in your picture. My partner says it's child's play to remove and replace.

If you do buy the FLOMASTA PLASTIC PART 3 FLOAT VALVE 1/2" from Screwfix I can tell you that the arm is adjustable and can be made longer! I got one the other day and was worried it was too short when I saw it. My partner fitted mine but it was quite an easy job.

Thanks all. Tried Wickes as was passing but didn't have what I needed so will try Screwfix tomorrow

This is super easy to replace - ask on the screwfix forum (Better than mumsnet for specific tradey-job advice) for step by step instructions

I don't know which part is broken. If you hold the float, and lift it, does the water stop running? Does the cistern then gradually empty until you let the float drop?

Oh, it's the float arm on the fill valve. You don't need a new syphon.

In your case you have a bottom entry one. You can measure the length of the stem from the bottom of the cistern. It might be 11"

If you buy the exact same model, you can tinker with it on the kitchen table, see how it goes together, and probably just unscrew it and swap the broken part. The arm pivot presses into that plastic stirrup. Screw the operating pin in so it is short and does not press on the button on the valve until it is assembled.

The Screwfix forum has a higher than average proportion of nutters. Try DIYNOT.

Before you start, you must turn off the water supply go the cistern. If you are lucky there will be a service valve underneath it. Turn the thing that looks like a screw head (it is not) so the slot is at right angles to the pipe. Use a very large screwdriver. If you have not got one, buy a set of screwdrivers for about £13.99

https://www.screwfix.com/p/flomasta-isolating-valve-15mm-2-pack/65251

The arm connecting the float has snapped