17-05-2018, 09:39 PM
The carbs carry little or no designation so the type is a mystery to most . I am not sure but understand the H alone is 1 inch., the diameter at the output. H2 is 1 2/8. Earlier without oil dashpot were OM etc but I dunno the exact distinctions.
Some early had horizontal mount holes and fitted directly.
Some early had horizontal mount holes and fitted directly.