Carburetor rebuild kit Fiala 170B2, 210B2, 420R5
This kit comes with everything you need, and don't need, to service your carb.
Installation Tip: Before installing the new diaphragms, lightly coat them with a small amount of oil. Installing the diaphragms completely dry may cause initial operating issues until they become properly lubricated and therefore sealed.
Technical Dimensions
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SETUP GUIDE by DR.G
DR.G's GUIDE TO CARBURETOR BUTTERFLY TRAVEL, THROTTLE SERVO SPEED, ADJUSTING THE CARBURETOR NEEDLES