columbus Posted July 1, 2016 Report Share Posted July 1, 2016 I have recently acquired a C15 trials conversion. It has a 250 star engine 1970 that originally was exported to the USA. Trouble is I cannot identify the filler plug or the drain plug for the gearbox , neither the Rupert Ratio or a downloaded BSA Instruction Manual show the same configuration as mine. There is no obvious hexagon drain plug or filler plug. I assume the g'box is on the left side at the rear of the crankcase. On my bike there is a small hexagon [ 1/2 inch ] on top of the crankcase [ under the exhaust pipe !] and a prominent protruding Phillips screw at the base which may be the answer. Any information . Many thanks. Quote Link to comment Share on other sites More sharing options...
stan wellback Posted July 1, 2016 Report Share Posted July 1, 2016 hi Columbus, I don't know the answer to your question. but I suggest you re-post it in the pre-65 section of the marques listing further down. it will picked up by those that do know there. regards stan. Quote Link to comment Share on other sites More sharing options...
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