Thanks for your reply. I was thinking the same thing!
There is fuel in the filter. I can see it through the glass cover. Don't know about the carb.
It does have a new fuel pump because I was thinking the old one may be weak as it is (was) original. New fuel pump didn't change anything.
I've been giving it a full choke when I try to start it but it seems to take a long time which runs the battery down.
Maybe I should plumb -in an electric fuel pump just to see if it helps???