Product Description: Brand new high quality Made of high-quality materials compatible for durability A021001921 Carburetor compatible for Echo CS-370 CS-400 CS-400F Wal bro WT-985 Chainsaw Interchange Part Numbers: Echo A021001921, A021001920, A021001700 Wal bro WT-985 WT-594-1 WT-946 furnish: ECHO CS-310, CS-370, CS-400, CS-400F, CS-510, CS-520 and new Yamato 402s CS-310 SN: C04511001001 - C04511999999-->Carburetor CS-310 SN: C04612001001 - C04612999999-->Carburetor CS-310 SN: C04713001001 - C04713999999-->Carburetor CS-310 SN: C23926001001 - C23926999999-->Carburetor CS-310 SN: C32914001001 - C32914999999-->Carburetor CS-370 S/N: C33714001001 - C33714999999-->Carburetor CS-400 S/N: C08111019801 - C08111999999-->Carburetor S/N C08111019801-C08111999999 CS-400 S/N: C09212001001 - C09212999999-->Carburetor S/N C09212060001-C09212999999 CS-400 S/N: C10013001001 - C10013999999-->Carburetor S/N C10013017101-C10013999999 CS-400 S/N: C33714001001 - C33714999999-->Carburetor CS-400 S/N: C69715001001 - C69715999999-->Carburetor CS-400F Serial Number: C27812001001 - C27812999999-->Carburetor CS-400F Serial Number: C27911001001 - C27911999999-->Carburetor CS-400F Serial Number: C28013001001 - C28013999999-->Carburetor CS-400F S/N: C33814001001 - C33814999999-->Carburetor CS-400F S/N: C69815001001 - C69815999999-->Carburetor Shindaiwa 402s S/N: C37414001001 - C37414999999--> Chainsaw Carburetor Shindaiwa 402s S/N: C37513001001 - C37513999999--> Chainsaw Carburetor S