Motorcycle, Solo (Harley-Davidson Model WLA)

"Motorcycle, Solo (Harley-Davidson Model WLA)" by United States War Department is a guide from the 1940s explaining how to use and fix the Harley-Davidson Model WLA motorcycle that saw action in World War II. It gives all the details, from what the bike is made of and how to drive it, to fixing it up; it was really helpful for the people who had to keep these bikes running during the war. The book starts by saying what it's all about: teaching people how to take care of the motorcycle. It's split into two main sections: one that shows you how to drive it and another that shows you how to keep it in good shape. It also points out important stuff like what kind of engine it has, how the controls work, what to do before you start it, and some safety tips when riding. All of this sets the stage for the more detailed instructions that come later in the manual.