Description
This Echo CS-300 carburetor is an aftermarket replacement for the WT-589 and WT-589A carburetor family used in selected 30.1 cc Echo chainsaws.
The principal replacement references are A021000231 and A021000761. The carburetor also replaces earlier WT-589 references used in the confirmed serial-number ranges below.
Confirmed Echo Fitment
Echo CS-300
- Serial 03001001-03088645
Original carburetor: A021000230 / WT-589 - Serial 04001001-04003216
Original carburetor: A021000230 / WT-589 - Serial 03088646-03999999
Original carburetor: A021000760 / WT-589 - Serial 04003217-04999999
Original carburetor: A021000760 / WT-589
Echo CS-301
- Serial 02001001-02043603
Original carburetor: A021000230 / WT-589 - Serial 02043604-04999999
Original carburetor: A021000760 / WT-589
Echo CS-305
- Serial 03001001-03999999
Original carburetor: A021000761 / WT-589A
Echo CS-306
- Serial 02001001-02999999
Original carburetor: A021000761 / WT-589A
Carburetor References
Replaces or cross-references:
- Echo A021000230
- Echo A021000231
- Echo A021000760
- Echo A021000761
- Walbro WT-589
- Walbro WT-589A
- Walbro WT-589-1
Echo A021000230 was superseded by A021000231. A021000761 was also superseded to A021000231. Echo later replaced A021000231 with A021000232 in its parts system.
Before Ordering
For a serial range not listed above, order only when the machine’s parts catalogue or removed carburetor identifies one of the listed references.
Compare:
- Mounting-hole arrangement
- Throttle and choke linkage
- Fuel-inlet position
- Purge connections
- Adjustment-screw layout
- WT-589 or WT-589A designation
After installation, check that the throttle opens fully and returns freely to idle. Confirm that all fuel connections are secure before starting the chainsaw.
Browse additional chainsaw parts for compatible Echo fuel-system, ignition and engine components.













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