ECHO CS-310 CS-352 ES Chainsaw Fuel Tank Breather With Grommet

Fuel tank breather fits Echo CS-310 and CS-352 (ES) chainsaws, replacing part number A356-000030. The fuel tank breather is a small one-way valve fitted into the fuel tank cap or body, allowing air to enter the tank as fuel is consumed during operation. Without a functioning breather, the tank develops a vacuum as the fuel level drops — this restricts fuel flow to the carburettor, causing the engine to run lean, lose power progressively during use or cut out entirely. A blocked or failed breather is a common and easily overlooked cause of fuel starvation on these saws. Fitting a replacement restores correct tank pressure and uninterrupted fuel delivery to the carburettor.

Fits the following Echo models:

• Echo CS-310
• Echo CS-352 ES

Replaces part number:

• A356-000030