Generac was founded in 1959 by Robert Kern in Waukesha, Wisconsin, and built its early reputation producing portable generators for Sears under the Craftsman name. The company grew into one of the best-known names in American power generation, supplying homes, businesses and industry with backup and portable power. Generac's growth followed the demand for reliable electricity during storms and outages across North America.

Generac is known for a wide range of generator sets powered by gasoline, diesel and gaseous-fuel engines, from small portable units to large automatic standby systems. Because the company designs and builds much of its own engine and electrical equipment, generator service is a blend of engine and electrical work. The product line has grown to include commercial mobile generators and energy systems for larger facilities.

Workshop manuals for Generac cover both sides of the machine: engine service and overhaul, fuel systems and carburetion, starting and charging systems, alternators, automatic voltage regulation, transfer switches, wiring diagrams, torque specifications, diagnostics and scheduled maintenance. Safety information, fuel-system checks and testing procedures are included, since correct generator operation depends on both the engine and the electrical side working together.

Homeowners maintaining standby systems, generator technicians, rental companies and small-engine shops will find factory documentation essential for correct servicing, safe operation and reliable power output. Detailed manuals are especially valuable during power outages, when getting a standby unit running quickly depends on knowing the right checks and procedures.