Carburetor for gasoline chainsaw ECHO CS4400 (AN)

This Echo CS-4400 carburetor – a non-original replacement, designed for compatible Echo CS-440 and CS-4400 Type 1E gasoline chainsaws. It replaces the WT-416 and WT-416C carburetor versions used in the serial number ranges listed below.

The Echo CS-4400 Type 1E is a 43,6 cm³ chainsaw. On early Type 1E models Echo used the WT-416, and in later production – the WT-416C. This carburetor is intended for both of these versions.

Echo CS-4400 Carburetor Compatibility

Fits the following Echo chainsaws:

Echo CS-440
Serial numbers 08001001–08007504
Serial numbers 08007505–08999999
Serial numbers 10001001–10999999
Serial numbers C07013001001–C07013999999
Serial numbers C09112001001–C09112999999
Echo CS-4400 Type 1E
Serial numbers 001001–101000
Serial numbers from 101001

This compatibility applies specifically to the CS-4400 Type 1E version. The separately catalogued CS-4400 Type 1 model uses a different carburetor version and is not included in this list.

Carburetor and OEM Numbers

Key part numbers:

Walbro WT-416
Walbro WT-416-1
Walbro WT-416C
Echo 12300039330
Echo 12300039331
Echo 12300039332
Echo 12300039333
Echo 123000-39330
Echo 123000-39333

On early CS-4400 Type 1E saws, with serial numbers 001001–101000, the factory used the 12300039330 / WT-416 carburetor.

In later CS-4400 Type 1E saws and in the listed CS-440 versions the 12300039333 / WT-416C is used. The non-original replacement is designed for the common mounting and control configuration of these carburetors.

What to Check Before Installing?

Before removing the old carburetor locate the saw's model and serial number plate. Check whether the saw falls into one of the ranges listed above.

Then compare these locations on the old and new carburetors:

Mounting holes
Intake port
Throttle shaft and linkage
Choke mechanism
Fuel and pulse channel connection
Arrangement of adjustment screws

During installation inspect the intake gaskets, the pulse tube, the fuel hose and the air filter elbow. Replace damaged sealing parts separately, as air leaks will prevent proper adjustment of the new carburetor.

After installation check that the throttle fully opens and returns freely to the idle position. Also check the fuel connections for leaks. Perform the final idle, low and high speed mixture adjustments according to the repair data for the specific saw.

More suitable components can be found in the Echo chainsaw parts category.