Lubricant helps to reduce friction between surfaces for your outdoor power equipment. Used for a variety of Lawn Equipment routine maintenance, Lubricant will aid your machine in turning tires, steering, gears, pulleys, bearings, belts, and spindles as examples. With regular use of equipment, it is usually recommended to lubricate your large power equipment every 24 to 48 hours of use. Lawn equipment may have several key locations with zerk fittings, where you can insert lubricant with a grease gun.