Mar 01, 1988 model.

If your referring to throttle and choke shafts for the large one piece Flo-jet yes they are still available but not kit form or at least they are here in the US. You would need one or more of the following:

491006 Throttle Shaft
692279 Throttle Shaft Seal (2 each needed)
222433 Valve Throttle
691437 Screw

390684 Choke Shaft
222010 Valve Choke
691437 Screw

394698 Carburetor Overhaul Kit

491031 Carburetor Assembly (Replacement Carburetor)

Valves sometime referred to as butterflies and the screws may be reused if in good condition.