stuttering fzs 600

[Gnasher]

good to see ya still at it mate   i found a video on me camcorder i made a couple of weeks back to post on here but never got round to it. take a peek and see what you think. her bike is no more so this doesn`t really apply anymore but maybe it could ring a bell with others ! good luck with your spanner man
motorcycle fuel pump problem=

Matey this problem was very unlikely to be a fuel supply problem, the float bowls hold enough fuel to last a while even on full throttle openings.  This for my money was mixture problem and I would have started with partially jammed open starter plunger/s and then looked at worn jets and or metering needles, damaged float/s and lastly diaphragms.  It could be any or a mixture of any you only need one carb to be out and you get what you had.