The puzzling complexity of the Jennings slot machine has led to the most comprehensive work ever published about any mechanical slot machine. This gigantic book is specifically directed to the owner of any three-reel Jennings bell slot machine manufactured after 1931 with the exception of the LITTLE DUKE. However, the reader will find that work on most other Jennings machines manufactured prior to 1932 can be managed successfully. Over 450 photographs are accompanied by step-by-step instructions for all routine maintenance operations as well as complete disassembly, overhaul, lubrication, assembly and theory of operation. With this volume and a few simple tools you will be able to analyze and correct nearly all of the problems you may encounter with your machine. This second printing of the popular first edition contains an extensive table of contents and introductory material. 155 Pgs 2008