New Old Stock Still Sealed. This manual is a comprehensive guide for small engine repair, covering engines from 5.5 HP to 20 HP four-stroke engines. Written by John Haynes, this nonfiction book is part of the Historical book series and published by Haynes Manuals, Incorporated. The book is in trade paperback format, with a length of 10.5 inches, height of 0.8 inches, and width of 8.2 inches. It has 320 pages and weighs 17 ounces. The book covers various aspects of small engine repair, including repairing techniques and parts. It is a must-have for anyone interested in technology and engineering, as well as transportation.