Mikuni carburetors are used on a wide variety of motorcycles. These particular carburetors are common to the 1984 to 1992 Yamaha FJ, FZ, XJ and YX 600 Air Cooled Four Cylinder Engines.
Some of the areas covered include:
Idle, Air, and Main Jets
Float Needles and Seals
Idles Mixture Screw O-rings, Washers, and Springs
Float Bowl Gaskets
Throttle Shaft Seals, Shims, and E-clips
Butterfly Valve Screws
Fuel Supply and Overflow T-fittings, Connector Tubes, and O-rings