How To Clean Carburetor On Stihl Backpack Blower. Carburetor for Stihl BR320 BR340 BR380 BR400 BR420 Replaces Walbro HD-4A HD-4B HD-13B Carburetor 4203-120-0603 4203-120-0605 Backpack Blower Carb with Air Filter Fuel Line Kit 44 out of 5 stars 45 2099 20. Primer bulb or purge bulb assembly.
The carburetor might be clogged. Perfect for both urban and rural jobs the BR600 takes the hard work out of heavy debris and sets the bar for all professional backpack blowers. Without this primer the carburetor would not get enough fuel to the combustion chamber to start.
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This sticky fuel can clog the fuel filter and cause the engine to stall. IntelliCarb Compensating Carburetor measures air on clean side of air filter and adjusts metering diaphragm in carburetor. The short port on the primer bulb is the inlet. See the appropriate section of your instruction manual for a description of the controls and the function of the parts of your model.
