Carburetor Adjustment For Echo 590 (CS-590) Chainsaw The Echo 590 chainsaw carburetor is run at the factory and the carburetor is set in compliance with Emission Regulations. In addition, the carburetor is equipped with “H” (High Speed) and (“L” (Low Speed) needle adjustment limiters that prevent settings outside acceptable limits. Echo 590 Chainsaw Engine Break-In […]
