[Lifetime Warranty] 13030039730 CS400 Air Filter

CS400 Air Filter

Key Features

• Complete maintenance kit includes an air filter, spark plug, primer bulb, and fuel filter.
• Filters airborne dust and debris to protect the engine and carburetor.
• Maintains proper air-to-fuel ratio for optimal engine performance.
• Direct replacement components engineered for specific model compatibility.

Replaces / Cross-Reference Part Numbers

• Air Filter: 13030039730
• Spark Plug: 90155, 90155Y
• Primer Bulb: 90109

Compatibility & Fitment

• Brand:Echo
• Models:CS-370, CS-370F, CS-400, CS-400F, CS-420ES, CS-3500, CS-4200, CS-4200ES, CS-5000

When to Replace

• Engine experiences reduced power, stalls, or is difficult to start.
• Air filter element is clogged, visibly dirty, or damaged.
• Primer bulb is cracked, stiff, or fails to draw fuel.
• Spark plug is fouled, has a worn electrode, or is damaged.
• As part of a scheduled tune-up or annual maintenance.

Installation Tips

• Before servicing, disconnect the spark plug wire to prevent accidental engine starts.
• Thoroughly clean the area around the filter cover before removal to prevent debris from entering the carburetor.
• Confirm the new filter is seated correctly in the housing before securing the cover.
• Check fuel line connections for leaks after replacing the primer bulb or fuel filter.
• Consult the equipment's owner's manual for detailed replacement instructions.