Program Features Evening classes Completion certificate Continuing Education Units (CEU’s) Small Gas Engines: Operation and Repair (OCC-316) Learn to service and repair small gas engines on equipment such as lawnmowers, garden tractors, edge trimmers, chain saws, portable generators, leaf blowers, etc. Routine service includes the inspection, cleaning and repair of brakes, electrical systems, fuel injection systems, plugs, carburetors, and other parts. The small gas engines course is a stand-alone class designed to increase skills and supplement related programs. You will earn a certificate upon course completion.