Thanks Grumpy,
I think you are right with the suction. I tried running it with the fuel cap loose and it seemed to run better. I still cant get the primer bulb to fill though. I have changed the plug and tried adjusting the carby (could only find 1 adjustment ie LD idle speed)and I have cleaned and inspected the fuel filter although I will replace it when I get one. There is some sort of valve or vent thing on the top of the tank that has a barbed spiggett thingy that I assume some sort of overflow line or similar would go on???.
I will pull it apart on the weekend and double check the fuel/vent lines and see if there are cracks etc and let you know how it went.
Thanks mate,
Graham
