The book "Honda CB650 Sohc Fours (78 - 84)" by Haynes Publishing is a comprehensive technical manual aimed at enthusiasts and professionals in the field of mechanical engineering. It provides detailed information and guidance on the maintenance and repair of the Honda CB650 models produced between 1978 and 1984. With a page count of 176 and a convenient size of 21.2 cm in width and 26.9 cm in height, it is both handy and informative. The second edition, published in 1988, is written in English and covers various technical aspects important for the upkeep of these motorcycles. Weighing 454 grams, it is easy to transport. The book is intended for readers seeking a deeper understanding of the technology and operation of the Honda CB650 Sohc Fours, offering valuable insights for both hobby mechanics and professional technicians.