I cant work out whats wrong = spark is there but a little week - fuel pump is pumping - fuel shut of is working on carb bit the plugs are dry - thant and the drive shafts - double headache
Have you chucked a bit of fuel down the carb throat? Have you got the connections on the fuel pump the correct way round?
I know all of those bud - cant get the bang bit something stupid i think - i wish i had run it up on the bench
re set the valve lash backed off some advance and away she went - a random misfire ob cyinder 1 and the fan is making a noise but all an easy fix