Unscrew it, and place a fuel safe o-ring from a local shop like halfords or something, there is an O-ring usually as it is just a plunger that only squirts a bit more fuel on 0-1/4 throttle twists.ย ย Not critical as GV Aquilas or older GT Nakeds never had it ,ย it’s a GTR thing.
And sure here is the diagramย (Press and hold to save image to phone or PC) – You won’t always see the plunger as the diagrams still used the 1st generation carb floats
