Model Fit Guide
Carburetor Compatible with:
Stihl 4203 120 0601 Carb ; Stihl 4203 120 0603 Carb ;
Stihl 4203 120 0605 Carb ; Stihl 4203 120 0607 Carb ;
Walbro HD-4A HD-4B HD-13B Carburetor
Used on Stihl Backpack Blowers ：
Stihl SR320 Carburetor ; Stihl SR340 Carburetor ; Stihl SR380 Carburetor ; Stihl SR400 Carburetor ;
Stihl SR420 Carburetor ; Stihl BR320 Carburetor ; Stihl BR340 Carburetor ; Stihl BR380 Carburetor ;
Stihl BR400 Carburetor； Stihl BR420 Carburetor
BR420, SR320, SR340, SR380, SR400, SR420, BR320, BR340, BR380, BR400 ,BR420C, BR340L
( SR 320, SR 340, SR 380, SR 400, SR 420, BR 320, BR 340, BR 380, BR 400, BR 420, BR 420C, BR 340L) Single Cylinder Two-stroke Engine Backpack Leaf Blower).
Product Details:
Air Filter Size(cm): length 5-1/8" x width 3-1/2" x height 1-1/2".
Air Filter Part Number: 4203 141 0301,4203 141 0301A,4203-007-1028.
Fuel Filter Part Number: 0000 350 3502, 0000 350 3506, Fits Fuel Line 3/16" ID, Length: 1 3/4", OD: 11/16".
Spark Plug Part Number: NGK BPM7A, Champion CJ6Y, Champion CJ7Y, Denso W22MP-U, Bosch WS6F.
Grommet # 0000 989 0516, 503735801
Fuel line # 0000-930-2803
Gasket Part Number: 4114 149 1205, C1M-W26.
Adjusters on carburetors
● Drain screw: used to drain the fuel out of the carburetor.
● Idle mixture screw: controls the intake of fuel to adjust the engine for optimum running.
● Idle speed screw: controls the intake of air to adjust the engine’s idle speed.
● High-speed screw: adjustment for high speed.
● Low-speed screw: adjustment for low speed.
● Turn clockwise to decrease the RPM (revolutions per minute) while turning counterclockwise is for increasing the RPM. The amplitude for each adjustment is 1/4 turn.
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