tecumseh part # 631021B
that is the part # for a small carb rebuilt kit, is universal to almost ALL tecumseh carbs
comes with float bowl ring, needle, seal, needle spring, and new bowl sealing washer
this IS IF, you DO NOT have a diaphram carb for your engine, can you get a pic? or model number of the s/b? toro has been pretty good with putting the engine model number on thier breakdowns which comes in handy