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500 Twin oil leak

Posted: Wed Aug 17, 2022 5:44 pm
by Rodders
Got home from a 20 mile ride yesterday to realise there was oil almost pumping out of the small vent holes on the adaptor plate for the generator (i.e. coming from the timing chaincase). The bike had run OK but I'd have soon run out of oil at the rate I was losing it. This morning I could see the duckbill breather had been losing a bit, but nothing like the above. Is this crankcase pressure? Any ideas please on what is likely to be causing it? Many thanks Rod