Some data from an earlier thread of mine:
http://www.rcuniverse.com/showthread...ght=mikenlapaz
How do you determine (ID) sizes on carbs? ID next to needle valves HD 2B
from Walbro:
[QU STIHL Blower/Sprayer
Carburetor HD-2-1
Description Part #
Part Name HD-2-1
OTE] STIHL Blower/Sprayer[/QUOTE]
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