i have a newer 912UL and wish to balance the two carbs with my carbmate. Not possible to separate the balance tube on this engine per the instructions provided both with the device or in any online video I can find without disassembling the fuel distribution manifold, so Rotax has added a threaded tap on top of each intake manifold to allow inserting an adapter for attachment of a hose for the carburetor synchronization tool. Anyone know what size bolt thread Rotax has inserted in this tapped access point? It appears to be an M6 or so.  I can’t find an adapter listed in the Rotax 912 parts catalog so if anyone has a recommended hose barb adapter that fits this access tap I’d appreciate that info as well. If not thenI I will look to McMaster-Carr for a solution.



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