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Non-Genuine Carburetor for Stihl BR320, SR320, BR400, BR420 Replaces 4203-120-0601

Non-Genuine Carburetor for Stihl BR320, SR320, BR400, BR420 Replaces 4203-120-0601

Original price was: $49.97.Current price is: $42.48. Taxable, FREE SHIPPING

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SKU: H20420 Category: Tag:

Quality aftermarket carburetor.
Fits: Stihl BR320, SR320, BR380, BR400, BR420 blowers.
Replaces: Walbro HD-4A, HD-4B, HD-13B

Weight 0.4 lbs

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FAQs

What is a venturi?
Venturi is a narrow passage, pipe, hose, or conduit that restricts airflow. That restriction forces air to speed up and drop in pressure. That low pressure vacuum zone is required for suction. In a carburetor, that suction draws in fuel. It also atomizes the fuel and sends it to combustion.
What is a carburetor’s function?
  1. mixes air and fuel in the right ratio for an internal combustion engine to run,
  2. controls engine speed by regulating airflow through a narrow section (venturi).

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