anilv Posted November 28, 2017 Share Posted November 28, 2017 Hi all.. I'm looking at a Yamaha YG-1 and will most probably be buying it with a view to restoring it. The bike starts but sounds terrible.. a lot of rattling. I will probably strip it down but I'm a bit curious about the rotary valve. Anyone here messed with them before? Anil Link to comment Share on other sites More sharing options...
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