Carburetor for Echo GT-22GES / SRM-22GES – A021-000550 WYL-170

Description

This Echo GT-22 carburetor is an aftermarket replacement for compatible Echo GT-22 and GT-22GES petrol trimmers. It replaces a worn, contaminated or damaged carburetor that can cause difficult starting, unstable idling, poor acceleration or incorrect fuel delivery.

The Echo GT-22GES parts catalogue identifies the diaphragm carburetor as A021-000550 and specifies WYL-170. Therefore, these references provide a useful basis for checking the replacement before ordering.

Compatible Echo Trimmers

The carburetor is intended primarily for compatible versions of:

• Echo GT-22
• Echo GT-22GES
• Echo SRM-22GES
• Echo SRM-22GESU – serial numbers C30226001001–C30226999999
• Echo SRM-22GESU – serial numbers S89720001001–S89720999999

Reference numbers:

• A021-000550
• A021000550
• WYL-170

The same A021-000550 carburetor reference is also catalogued for selected Echo SRM-22GESU machines. However, production and serial-number differences may affect compatibility. Consequently, do not assume that every machine using a similar Echo engine uses the same carburetor.

Echo GT-22 Carburetor Details

A diaphragm carburetor meters fuel according to engine demand while allowing the machine to operate in different positions. When the carburetor becomes worn or internally contaminated, common symptoms include:

• Difficult starting
• Engine only running with choke
• Unstable idle speed
• Poor throttle response
• Engine hesitation under load
• Fuel leakage or flooding

Nevertheless, these symptoms can also result from deteriorated fuel hoses, an obstructed fuel filter, leaking intake gaskets or a dirty air filter.

Before replacing the complete carburetor, inspect the surrounding fuel system. In addition, compare the throttle linkage, fuel connections, mounting arrangement and overall body design with the original unit.

Installation Checks

Install the carburetor using sound intake gaskets and make sure all fuel hoses are connected correctly. Gaskets, fuel lines and other external components should not be assumed to be included unless they are visible in the product photographs.

After installation, check the throttle movement before starting the engine. Furthermore, confirm that the throttle returns correctly to idle and that no fuel leaks are present.

The carburetor may require final idle or mixture adjustment after installation. Carry out adjustment with a clean air filter, suitable spark plug and fresh two-stroke fuel mixture.

Browse additional brushcutter and strimmer parts for compatible Echo engine and fuel-system components.