Manual covers walk-behind lawn mowers by 38 manufactures. All areas of lawn mower care and repair are covered including: engine starting and operating procedures; engine and mower identification; troubleshooting, including an easy reference chart; routine maintenance; carburetor service; engine service; 11 brands of engines; self-propelled drive systems; and blade brake clutches. Most pages include detailed line drawings and/or black and white photos. This is a serious repair manual, similar to the popular automotive repair manuals.