Are you having problems with your carburetors? Are they overflowing fuel and filling your crankcase with fuel? Do you need a complete Viton seal kit for a very low price? Read this thread. It will help guide you to the parts you need to rebuild those Mikuni carburetors the right way.
I recently finished rebuilding a set of 1993 GSX-R 750 carburetors for a forum member.
Original hardware replaced with Allen heads. Note the lengths of these bolts in final photos on the vacuum caps are too long. Ignore this. When I finished the tips were flush and had lock rings and washers. I forgot to take a photo of this.
All parts were thoroughly cleaned and restored.
Setup was with factory OEM specs and jet sizes.
New float needles and seats.
New gaskets and seals throughout.
Brass plugs drilled out and mixture screws restored.
Throttle plate shaft seals replaced. OEM throttle plate screws were hand filed and removed. Upon reinstallation the new throttle plate screws were installed with red thread lock and then peened on the opposite end with a hammer and "chisel-like" tool.
Floats were set at 15mm. Mixture screws at 2.75
Finally, the carbs were bench synchronized before shipping them out.
VOILA! This is how you properly restore a set of Mikuni carbs inside and out!!!! I did the same thing with the carbs on my bike, but I didn't post this many detailed photos.