thank you all for coming back with ideas. Tried the carb cleaner but it didnt work keith , but will now keep some for ongoing use.
Tried injecting petrol direct ,which started it and it ran for about 3/4 seconds, Thanks for that one John. Also topped up the oil Colin but still no joy. Actualy managed to download a workshop manual from the KIPOR site http://www.kipor.co.uk
. Very interesting but it didnt solve the problem. Left a note on the Kipor contact page and someone contacted me saying he was the service manager how could he help. Lots of advice and checking procedures down the phone but still no solution. Took your advice Agility eye and rather than send it to Derby for a fix, I took it in personaly and waited whilst they did it and I watched. He confirmed it was a fuel problem probably caused by water in the fuel, and showed me the jelly that had formed.He stripped and cleaned the carb, it ran but rough. Stripped it again, still rough. Put 2nd hand carb on . still rough but a little better. Took a new carb from a new engine and presto it worked. The new engine was a warranty write off because of a broken engine so putting my carb on that one wasnt going to bother any customer as it was going back to the factory. Oh he also replaced the smart throttle switch that had given up the ghost. ( the third switch on this genny) What is worth recording is that I was now expecting a bill for a £80/100 having watched this man work for 2 hours. I clutched my little roll of banknotes ( I do so hate parting with them) and asked for the damage. Will £40 be ok? I shouldnt realy have taken that long. For those who may need help in the future .
The service manager for Kipor Uk is Richard Board, Unit 3, Small Business Centre , Adams Close Heanor, Derbyshire.
A very nice hard working and honest man with a lot of knowledge about KIPOR who is worth supporting if you have problems.
Cheers everyone and thanks for taking the trouble to suggest some possible solutions.