The machine is a JCB Loadall 520-2 Year 1982.
The machine has just recently refused to start. Before, she was starting on the button without any hesitation. Then the pull stop mechanism stopped working and I had to manually operate the fuel cut off lever in the engine compartment. I did this maybe once or twice to start and stop the machine and then the next day when I try to start it, it won't start. There is plenty of fuel, the engine is turning over on a new battery but it is not even smoking. I'm frustrated because I'm sure that it is something fairly simple, probably something that I've unwittingly disturbed when manually operating the fuel cut off but can't work out what it is. Can any one help because it is hard lifting blocks up a scaffold without it!

Paul, May 2011

ok

T.saravanan, March 2014

Thanks for your help. You were right. It was the fuel cut off valve and I had dried it out trying to start it.Thanks again

Paul, July 2011

Sounds like the fuel shutoff valve is jammed shut, you might have a vapour lock in the system, if you have spun it over a lot. Check the fuel filters, free the cutoff valve, and bleed the system.

Sid Chrome, June 2011