The HS40 is a Flat slide Mikuni Carb.
The stamping on mouth of this one reads “T40 6W” . The jets included in it are in the pic to the right. 1) 2)
Trace: • EVO: Oiling & Lubrication - Sub-01F • W E L C O M E ! • REF: Oiling & Lubrication - Sub-05G • EVO: Oiling & Lubrication - Sub-03G • IH: Carburetor, Intake Manifold & Exhaust - Sub-01Q • IH: Body Parts - Sub-01M • REF: Carburetor, Intake Manifold & Exhaust - Sub-01N