Hello, Any one running a XS250 DOHC model 17A or 17E? trying to trace where the pipe fits on the carbs on a T junction between the carbs on the fuel feed? pic of parts diagram attached. The vacuum pipes on inlet rubbers and fuel supply are obvious fittings but this particular pipe is a myystery. it does not appear on the the DOHC xs400 models. the Japanese manual i have for the xs250 does not mention this pipe anywhere. My bike wont start after restoration so wondering if this is the cause. Is this pipe just a breather or is it part of the vacuum system? Many Thanks Richard
It's a breather. Years back I had an XS250 in the shop - owned by a Priest. His complaint was that on the local motorway it would top out at around 100kph - then go progressively slower. After looking through the carbs and fuel system - and asking a guy who'd worked for the agents when they were new - I drilled out the fuel tap passages. Much improved performance. The local agent had done this as a warranty job when they were new. This one had slipped through the net.
