have just purchased an 84 atc 200s for next to nothing got it running great considering the last owner was a bit simple i think but i was told the engine was the ES engine but i cant decode the engine numbers i have engine number TB05E-5017389 and cant figure out what the engine is i know its 192cc honda but from WHICH model i need gaskets and a carb rebuild kit soon and want the RIGHT PROPER SETs, Nothing else or its a waste, any help and i mean ANY help please share and i know for SURE the frame/bike is a 1984 atc200s, THANKS

 

Does it Have a provision for an Electric Starter, or have an electric Start? does it have Reverse? the 200M and 200ES (A.K.A Big Red), had Electric Start and Reverse. if it dont, then its Probably from a Regular 200 (1981-1983) or a 200s (84-87)
the (84-87) Big Red (200ES and 250ES) was also Shaft Driven.