Hi I am a kawasaki fan and have just bought the 1998 model kawasaki zzr400, absolutaley beautiful machine, the only thing is its shooting a little black smoke when it´s in high revs on stand still on the open road no black smoke but I delighted in high revs you see black smoke, I would actually like a proper service manual so that I can fix up this gem and make it like brand new any help or advise would be much appreciated.