The Ty250s 1988 59n England 2859n-310e1 Carburetor consists of twenty-eight pieces with the Carburetor Assy 1 being the most expensive.
The lowest price component in this Carburetor parts-list fiche is the Washer,spring.
Some items from this specific schematic: Jet, Main (# 108), Needle Set, Valve, Thr0ttle 1, Jet, Main (#110).