Hello all.
I just thought I would stick a piece on here about running problems with the 250 cc twin engine, after one or two problems with starting and running, I checked carburettor and had to clean it out, jets and body, with the air line. I found I was getting fine dust debris from the tank and the petrol tap is so close to the carb I was unable to fit an in line filter, so I removed the tap and fitted a new brass gauze in the tap as there was not one in there, it was difficult to solder it in but I did manage. Since doing this the bike is now running very sweet, even starting without choke.
TTJohn