Simplicity 990275 is a gang mower ideal for mowing lawns, especially in small areas. It is equipped with four Alemite Zerk grease fittings on each side plate and one fitting on each wheel sleeve for easy lubrication. The revolving knives should touch the bottom knife lightly from end to end. The bottom knife can be brought closer to the revolving knives by the use of the cutter bar adjusting screws located at each end of the cutter bar. The cutting heights can be adjusted from 1" to 3-1/8". The mower can be converted to a 3 Gang Mower by easily detaching the two outside mowers.