This is a detailed owner's service manual for the Yamaha YZ250. Published in August 1986, it is believed to be for the 1986 or 1987 model. In addition to engine and carburetor maintenance information, specifications and setting methods are also included. Although it is a new, unused item, it has been in storage for a long time, so there is some yellowing, but it is generally quite clean! - Brand: Yamaha - Model Name: YZ250 - Type: Owner's Service Manual - Contents: Detailed information on engine, carburetor, intake, etc. - Language: Japanese Thank you for viewing.