Developed as part of the Marine Corps Institute (MCI) correspondence training program, this course on engineer equipment mechanics is designed to advance the professional competence of privates through sergeants as equipment mechanics, Military Occupation Specialty 1341, and is adaptable for nonmilitary instruction. Introductory materials include specific information for MCI students and a study guide (guidelines to complete the course). The 13-hour course consists of four chapters or lessons. Each unit contains a text and a lesson sheet that details the study assignment is also provided. Topics covered in the lessons include test equipment, engine diagnosis and repair, diagnosis and repair of power train components, and diagnosing, troubleshooting, and repairing auxiliary equipment. (YLB)