Developed by teacher educators and agricultural engineers and tested by vocational agriculture teachers, this reference is for student and teacher use as part of a course on servicing and operating an engine. Content includes: (1) Distinguishing Features of Small Engines, (2) How Small Gasoline Engines Work, (3) Comparing 4-(Stroke)Cycle and 2-(Stroke)Cycle Engines, (4) Importance of Proper Care and Operation, (5) Identifying Types of Small Engines, (6) Cleaning Small Engines, (7) Servicing Carburetor Air Cleaners, (8) Servicing Fuel Strainers, (9) Servicing Crankcase Breathers (4-Cycle Engines), (10) Lubricating Small Engines, (11) Refueling Small Engines, (12) Servicing Spark Plugs, (13) Checking and Adjustment Carburetors, (14) Checking Compression, (15) Checking and Servicing Batteries, (16) Starting Engines, (17) Operating Engines, and (18) Storing Engines. Teachers should be graduates in teacher education and students should have mechanical and science interests and be of at least high school age. Supplementary materials include 168 colored illustrations, a list of references and an owner's engine information form. Volume II of this series contains information concerning major maintenance and repair of small engines and is available as VT 006 290. (DM)