I have been told that because the mower starts then runs fast and the slow and drinks all the fuel that the diaphragm on Champion R484Sp Factory Ref R484TR needs to be replaced but can't find any where how to do it so I am hopeing some good person will tell me. I was told by the Technical Assistance or the Customer care desk. That I need to remove the Air Filter, don't toch the 2 springs. there is 2 bolts holding on 1 A/F 1/2 and the other 1 A/F 7/16 then remove the Rod on Carburetor there's about 6/7 screws on tank and carefully lift off. All I want to know is where is the Diaphragm, where I can buy one and how to replace it as I can't find any hand manules on my mower. When mower is going it drinks so much fuel and runs fast and slow and because of this that is why I was told it id the diaphragm that needa replacing so please can some one help us.
Thanks Vera

Vera, May 2009

Phil Saunders, Thank You for you information on how to fix the Diaphragm on our mower it have got the part and the lawn mower is working well and has cut the big lawn teice today so thank you so much

Vera, May 2009

Well Thank You Phil Saunders, As this is not my mower I will get make to you when spoken to my friend and we will get the details and get make to you. Not sure where to find these details but I will get what info I can and perhaps we can get it sorted out my you help. I have printed out your Answer
Sorry my question was a bit long winded but new to all of this.Once again Thanks

Vera, May 2009

You have detailed how to change the diaphragm in your question - what do you want to know? When you remove the carburettor (with the 5 or 6 screws as suggested) you will find the diaphragm under it. Costs pennies and takes 15 mins to fit.

I can supply a diaphragm for the princely sum of £2 including P&P anywhere in UK. I will need the model and type nubers off the engine to ensure I send the correct one (3 different types).

phil_saunders(a)bigfoot.com

Phil Saunders, May 2009