Just for anyone with the misfortune of owning a mikuni carb (OK, allright, I know Amal designed them and then sold them on when they found they weren't too hot for four strokes). Anyway, they don't have that helpful little filter incorporated into the incoming fuel passage as Amals do, so this is now the third time I've had to take one apart to stop it flooding. Seems even the smallest particle under the float valve has a desire to stay put.
Trouble is, to remove said valve, you need to remove the brass lever between it and the floats - and that's retained by a pin. A pin that's a press fit in the carb body pillars, meaning if you try to drive the pin out with a pin punch, there's a fair chance you'll break a pillar. And that means a new carb body, so it's essential to support those pillars before getting out the toffee hammer. I made a jig out of a piece of hardwood, as shown in accompanying pics. The first pic shows the pin already drifted out of the retaining pillar and ready to pull out completely. Why didn't they screw the damned thing in?