Very nice little booklet covering the instruction and repairs for Iowa over size engine made by Associated MFG in Waterloo, Iowa. Covers gasoline 2 to 18 HP and kerosene 2 1/2 to 18HP. Has all the starting and running info you will need as well as engine specs and related info. A good size book that is well put together and covers a lot of material. Measures 6" x 9." 29 pages.